Webcam Lags/Freezes When Using OBS with Fortnite

spudzhan

New Member
When using OBS, my webcam intermittently freezes and lags when I play Fortnite - both on stream and for local recordings. Can’t figure this out, been an issue for a month now (since I got PC). Drivers updated, OBS updated but still the webcam lags. Have tried lowering fps and Fortnite settings, disabling HAGS, running OBS as administrator etc. Only an issue when I play Fortnite (camera is fine when I do display capture on Google Chrome). My PC is good enough where I shouldn’t need to change to performance settings (which haven’t even made a difference to the lag). Key thing is the gameplay never lags or freezes, just the camera. Issue occurs with both display and game capture. Tried recording camera feed outside of OBS with Fortnite open and no lag so assuming its a weird quirk or interaction between OBS and Fortnite? (have tested with GTA V and no issues btw)

Using Elgato Facecam Neo at the moment but had same issue when using my iPhone 12 via Camo. Wired connected to usb port on my motherboard.

Here is footage of lag example: https://www.twitch.tv/spudzhan/clip/MoistPlacidBunnyDatSheffy-0GDFol70FPLQo9o0
(For this stream I didn’t have elgato camera hub page open but it lags even when I do have it tabbed)

Another lag example: https://www.twitch.tv/spudzhan/clip/BenevolentSincereScallionDoritosChip-Uy3aiXUOAAOU7gjc

And here is footage of cam working normally: https://www.twitch.tv/spudzhan/clip/CrunchyStrangeUdonKevinTurtle-B7R9EZKcrbnjdjED

PC SPECS:
CPU: AMD Ryzen 7 7700 8 Core 5.3Ghz Boost CPU
MOTHERBOARD: Gigabyte X870 EAGLE WIFI7 AMD Ryzen DDR5 WIFI Motherboard
DDR5: Crucial Pro Overclocking 32GB (2x16GB) 6000MT/s DDR5 Memory Kit
GPU: Gigabyte GeForce RTX 5070 WINDFORCE OC SFF 12G GDDR7 Triple Fan Graphics Card
SSD: Western Digital Black SN7100 1TB Gen 4 NVME M.2 SSD - Read 7250MB/s , Write 6900MB/s
I use a wired dualshock PS4 controller when playing
Roccat Elo 7.1 USB Headset

Here are some logs from a stream with the issue: https://obsproject.com/logs/Co2BMVDa9vTG85l3

If anyone has any ideas or fixes then please let me know, I have spent a month troubleshooting and trying to solve this with no success. If you need any extra details then let me know. Thanks!
 
1. Update to OBS 32.2.2.
2. Audio buffering hit the maximum value. This can be an indicator of very high system load and may affect stream latency or cause individual audio sources to stop working. Keep an eye on CPU usage especially, and close background programs if needed. Occasionally, this can be caused by incorrect device timestamps. Restart OBS to reset buffering.

Source affected (potential cause): Desktop Audio
3. Unless your camera is using the entire canvas, lower the resolution from 1920x1080 to one that matches the size.
4. Try disabling Look-ahead, Adaptive Quantization and setting Multipass Mode to Single Pass in the Output settings.
 
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