Ndi stuttering. Hi everyone, I hope someone has stumbled upong such and issue and resolved it. 8. What exactly is stuttering? Last time I tried NDI, there was no discernable performance hit to the gaming PC. I am seeing performance issues with the output slightly stuttering. 9. Trying to see if anyone can help here. Also on the switch is my NDI-HX PTZ, Sony Cam via SDI-NDI Pro Convert, Mac Mini M1, and 1 Spark I/O. After some almost successful troubleshooting I figured I try the parts at home just to exclude the option that the hardware has In the Windows Release Health notes, Microsoft writes that "severe stuttering, lag and choppy audio and video" may occur when using the Network Device Interface (NDI) to stream audio and video. I didn't tested it on proper HDMI to NDI encoder but tried streaming NDI from my laptop (where interval stutter bug is not present) to my PC and there was no stuttering on recordings so i suspect that NDI streams are handled by OBS correctly. I upgraded my version of OBS to the latest version. I have a drastically worse gaming pc in comparison (i7-2600 and GTX 970), but I do have a 1700x and 650 Ti stream pc. OBS NDI 4. I've noticed that when bringing in more than 3 or 4 NDI inputs Hi, We have problems with our built-in NDI structure for a long time The setup consists of two Tricaster Elite 2, 20 x Kiloview N4 (8 x decode/12 x encode), 2 x N40 as decoder, 10 Windows PCs with NDI Tools and an IMAC with NDI Tools. I posted this on the Facebook page but I want to put it here for more eyes to see. I am using Magewell Pro Convert Plus to convert HDMI to NDI at 3840x2160 and a tp-link TL-SG108-M2 8 port 2. Didn't require much effort and the result is the same in quality and replicating issue. I tried monitoring network usage with windows task manager and it turns out that when I see the source going smoothly network usage is at around 130Mbps NDI stutter after August 2025 Windows updates: switch NDI Receive Mode to TCP or UDP ChatGPT Aug 23, 2025 Featured broadcast workflow kb5063709 kb5063878 low latency streaming microsoft ndi ndi tools ndi transport obs studio patch release health rudp screen capture streaming streaming stability tcp/ip udp windows 10 22h2 windows 11 24h2 windows Microsoft has confirmed that its August 2025 security updates can break NDI-based streaming on affected Windows PCs, producing severe stutter, dropped frames, and choppy audio/video when Network Device Interface (NDI) is used with its default Reliable UDP (RUDP) transport — a regression that Microsoft has confirmed that its August 12, 2025 cumulative updates introduced a serious regression that causes severe stuttering, lag, and choppy audio/video in NDI‑based streaming workflows on affected Windows 11 and Windows 10 builds — a defect tied to NDI’s default RUDP (Reliable UDP) My NDI is coming from a Lenovo laptop with Window 11 Home, an I9 1300HX processor and an Nvidia RTX 4070. com Microsoft has formally acknowledged that its August 12, 2025 cumulative security update is responsible for severe stuttering, lag and choppy audio/video in NDI-based workflows on affected Windows 11 and Windows 10 builds, and vendors and community engineers have published an immediate—but I'd firstly make sure you're using the NDI tools from NewTek for your gaming pc, not the NDI plugin for obs studio. However, stopping the NDI output and just streaming on 1 PC produced a super smooth stream that I want to replicate via NDI, so that I can increase the quality further by pushing my stream PC's preset. I deleted the NDI driver and WATCHOUT and made a fresh installation of WATCHOUT 6. When I use the exact same sources using RTSP or SRT the stutter does not occur. Here are some potential workarounds as I cannot get a smooth NDI stream out of VMix. Gaming PC: CPU: i7-9700F The Scan Converter tool uses the direct NDI protocol to send the raw display video (and optional audio) across the network to be discovered and displayed in your NDI plugin enabled OBS. The encoding PC received the signal so fast, that I could play Overwatch by watching OBS's preview window on that machine. Here are some potential workarounds as Hi, I was trying to setup NDI to use my 2-PC setup to stream and it works but the source I receive on the streaming PC is laggy at times. 94 via any of the outputs. All NDI sources micro-stuttering every second or 2 on Windows machine with high specs. 0 ndi 4. 0 obs-ndi stutter stuttering audio H So I recently got my laptop fixed which has a i5 4200U and I am using it with NDI so i can use it as a streaming pc. Tried everything from vMix settings, to VLAN tagging on my switch. **NOTE: I am testing a demo system So I have a dual PC setup and I use NDI tools to do the game capture. To also point out that it's the NDI plugin, I tried using StreamLabs OBS on the streaming PC (which has the NDI receiver built in directly) and tested for stuttering there. 7 but this didn't cure the problems. HOWEVER, Sending OBS to NDI Transit would result in the same stutter when used as a Video Source. 4946) introduced a networking regression that is causing severe stuttering, lag, and choppy audio/video in NDI-based streaming workflows — a problem Microsoft has confirmed and that currently requires configuration Operating System Version Windows 11 CPU Intel I5 13600K GPU Radeon 6600 NDI Devices Mainly Character Animator and OBS sources with filter NDI plugin, both from MAC OBS Version 30. They are on a 10 gig connection Question / Help Freezing/Stuttering NDI Plugin PauloCosta Apr 23, 2020 #freeze #issues #ndi #plugin #stutter dual obs set up ISSUE Transmitting NDI via vMix Desktop Capture via NDI from 16 laptop workstations. OBS-NDI Audio/Video Stutter Affinity on OBS 30 Night Vs Knight 804 subscribers Subscribe I have been having consistent problems with NDI inputs dropping frames/stuttering in vMix, I am seeing this visually in vMix and also by looking at the performance statistics in vMix (dropping over My advice if your having the OBS-NDI frame loss issue is to go through your windows and minimize them until you locate the one causing the stutter by being active. For the life of me, I couldn't get NDI to work well. Constant skipping and stuttering. Just monitor through obs on your stream pc as you minimize different windows, especial browser video windows. Users are seeing severe lag, stuttering, and other performance issues with streaming apps like OBS and NDI Tools after the latest Windows 11 update. Testing using a Unifi switch between my vmix workstation and a People had mentioned using OBS NDI Plugin on both game + stream PC could introduce stuttering / FPS issues on the actual broadcast. Unfortunately, I've made two changes since my previous recordings (which were fine) and my new recording (which are having stuttering issues). In main vMix all NDI feeds were extremely stuttery and laggy (by up to 30sec) I was tearing my hair out trying to solve. Trying to output 1080p59. That should be using NVENC and shouldn't be giving you encoder stutter. 9 makes the problem worse and increases the delay at a faster rate. Before when I wasn't using NDI on the same laptop I could even do a 10k bitrate stream but since I have connected it with NDI the output bitrate stays around 1k or 2k and Hi everyone, I just had to troubleshoot a very strange issue, and couldn't find any answers to my particular problem anywhere online. The problem occurs only with RUDP connections, while traffic sent or received using UDP or Single-TCP remains unaffected. Hello, Having issues with NDI sources lagging or getting stuck in OBS 31. My advice if your having the OBS-NDI frame loss issue is to go through your windows and minimize them until you locate the one causing the stutter by being active. Aug 22, 2025 · Microsoft has admitted to yet another issue in the Windows 11 August 2025 Security Update: streaming apps might be disrupted by the changes. Use HDMI to NDI encoder to stream by NDI, then use NDI source in OBS. 5. -CPU usage still between 5-10% on gaming pc and 40-50% on my streaming one. All the same, try changing the process priority of Screen Capture HX to "realtime. 1. -Dropped frames are 0% on both pc. Did anyone discovered yet how to fix this micro-stuttering issue? Sep 10, 2025 · Microsoft has resolved severe lag and stuttering issues with NDI streaming software affecting Windows 10 and Windows 11 systems after installing the August 2025 security updates. I have my main PC which is sending multiple NDI sources over to the recording/streaming PC. 3. Viewing the same NDI stream with NDI Studio Monitor there is no apparent lag. It looks as if the first 10 seconds or so are fine and then the stuttering starts. 90) with the NDI Plugin and two different PTZ Cams. I've been trying to follow other threads suggestions as well as my own troubleshooting but just still hitting the same issue. 2 NDI Tools Version 5. I've had NDI stuttering because somebody, who shall not be named, decided that Sunday morning at 10am was the best time to start a system wide network diagnostic, resulting in some stuttering just before broadcast. Syncing and applying different render-delays to lock pictures reliably is impossible. We want to present a video film from one PC via a beamer and simultaneously stream it on the Internet on a second PC with OBS. Aug 22, 2025 · Microsoft has confirmed that the August cumulative security update for Windows 11 (KB5063878, OS Build 26100. We thought the video inputs freezing was due to the NDI sparks, but we still have issues without them. According to Microsoft, "the issue affects streaming apps, including OBS (Open Broadcaster Install OBS Studio version 30. 2 NDI Sources per PC and using different sync methods. (i5-4690k + R9 390) The only thing OBS does here is send the NDI signal. Webcam with microphone source. To do this, I have installed the app vMixDesktopCapture on the first PC, which streams the video and audio signals to the local network using the NDI protocol. The August 2025 Windows 11 cumulative update (KB5063878, OS Build 26100. We combined the audio-only sources into the corresponding video sources: Desktop capture with desktop audio source. (In my case, anything except "Reliable UDP. so when i Start with one NDI stream my main Streaming computer gets 90 Mbit/sec in its networmonitor, when i start NDI02 it goes up to around 180 Mbit/sec. when i reduce it to low it somehow smoother I'm currently using the NDI plugin for my two PC streaming setup. There was no stuttering, and the network connection was using the exact same speeds (120 to 180 mbps) when using SLOBS. Connection works very well but all videos I am trying to playback are stuttering. On occasion our DDR channels freeze and we can’t play video. It worked well last Sunday. Hi everyone, I have recently started to have to broadcast company all-hands meetings using Microsoft Teams and vMix through NDI. Both OBS and the presentation software is running on the same computer. It used to work perfectly but now anytime I preview the stream on my streaming PC on SLOBS, the frames are always low/video stutters a lot. The above scenario, using 2 sources instead of 4. (AMD FX-6300 + GTX 1050 Ti) For each NDI stream i have around 90Mbit/sec inmy networkmonitor. I have 2 PCs connected on same lan network, when i run Screen HX on first device and receives the signal from the other, it stutters a lot specially on Ultra bandwidth. 0. 5gb switch and into a 10gb rj45 port on the server. The issue manifests as "severe stuttering, lag, and choppy audio/video" when using Network Device Interface (NDI) for streaming or transferring feeds between PCs. Symptoms When this update is installed, NDI connections may drop unexpectedly during use. 4946) is causing severe stuttering, lag, and choppy audio/video when using NDI-based streaming flows — an issue that hits production tools such as OBS and NDI Tools and has forced Hello, I tried almost everything to run my stream smoothly with the OBS ndi plugin on a dual-pc setup. Some users encounter maddening issues, particularly latency and other problems, depending on the tools they’re using in tandem with NDI. 2 OBS Installati Microsoft has confirmed that the August 2025 security updates are causing severe lag and stuttering issues with NDI streaming software on some Windows 10 and Windows 11 systems. The OBS Plugin should only be used on the streaming pc. I haven’t been able to capture this on video, but we’ve also have just had weird instances where we dial in stream settings multiple times and hit okay, only for it to not take. . The stream also displays the lag, so it is not just a problem of OBS preview Setup: Mac: - Generating slides with Proclaim obs-ndi stutter and audio loss when OBS is **in the foreground** Night Vs Knight 103 subscribers 3 Same problem here on OBS Mac 26 and 27 (OSX10. The quality of both is pristine when it's not stuttering. vMix would also stutter just like OBS capture would when sent to the streaming PC's OBS. I've managed to remove the issue of lagged frames by turning on v-sync in game and my preview on OBS on my gaming PC which now seems smooth and fluid, however on the streaming PC side of things the preview and stream stutter and Hey,I've just bought a TriCaster from NewTek and I'm trying to connect Millumin via NDI so I can playback Videos with Alpha via NDI. The company Apr 4, 2023 · Operating System Version Windows 11 OBS Version 29. 0 Describe the bug NDI Stream stutters and lags, seemingly breaking the audio so that nothing comes through consistnen NewTek’s Network Device Interface (NDI) is a powerful tool, enabling many creative professionals to share high-quality assets and videos over the internet—but the process is not infallible. Receiving NDI from master laptop via NDI Virtual Input on each laptop. Hello there, so at work I finally managed to get some NDI hardware to play around but it has been a bit of a headache due to the special work network circumstances. Before I only had this problem when streaming Valorant, now it is just stuttering anytime anything is streamed. 0 or later (Qt6, x64/ARM64/AppleSilicon) on all relevant machines from https://obsproject. The current code sets this to False if the NDI source is set to "Safe" latency but sets True if the NDI source is set to "Low (Experimental)" There may be reasons for this that I don't know but it seems to cause a lot of frame loss, at least on my Windows system. However today we experienced stuttering from the video. " If that fixes it, follow the directions in option four of the above link for creating a shortcut to always open it with that priority level Streaming across NDI with a 2 PC setup produces judders and stuttering on both 720p and 1080p. Nothing else i found on any forums seemed to help, so hope this does. I'm using a TC Mini connected using both NICs to a D-Link DES-1228 switch. On the It works fine except that a live image captured into a Datapath VisionAV SDI card or through NDI stutters badly on this server. ") Just putting this out there in case anyone else is having similar issues: after fighting with OBS/NDI with audio cutout issues (usually logged as audio lagging, and then resetting at maximum buffers--see #875) for months, and finding no Whenever I try to use OBS NDI Output on the gaming desktop and add it as an NDI Source on the streaming desktop, there is horrible stuttering in both video and audio. Interesting. It was fine in NDI Issues (Stuttering on livestream) TLDR: Try using NDI Tools Access Manager to change the Receive protocol. So since I solved it, I figured I would post the solution By using vMix to capture an NDI desktop capture and send it to NDI transit that is then seen as a VIDEO SOURCE on OBS, the stutter problem is almost gone. 16, NDI Plugin 4. I have obs open on both gaming pc and streaming pc and the image is clean but the video is extremely choppy with huge fps drops. However, our collective creative production and professional Aug 22, 2025 · Are you experiencing severe lag or stuttering in your NDI streaming software after the latest Windows 11 update? Learn how Microsoft's August 2025 update is impacting streamers, businesses, and content creators, plus the solutions currently available. The devices have one of their NICs in their own VLAN on I recently downloaded the NDI plug in so I could use my laptop as a streaming pc. I have been able to add it as an OBS NDI Source on other windows desktops with absolutely no issues at all. Microsoft has acknowledged a new, practical regression introduced by the August cumulative update for Windows 11 (KB5063878) that can cause severe stuttering, dropped frames, and choppy audio/video in NDI‑based streaming flows — a problem that disproportionately affects multi‑PC capture and Dual Mac OBS NDI Stutter/Lag Audio/Visual Issue Hugo Hayes Sep 2, 2020 glitch glitching mac mac audio ndi ndi 4. We're a church and using an NDI signal from our presentation software to display song lyrics on the screen while we worship. iiqx2e, 62ul, skwrk, l3j3z, irff, b9sez, yobkd, wp56n, oc9g, wiwiyw,