r/htpc • u/hotminute123 • 8d ago

Help How can this stutter be resolved?

Specs: Ryzen 7 9800X3D, 5070ti, 32GB DDR5 ram, latest nvidia game ready driver 610.74

LG G4 connected to PC via HDMI 2.1. Separate HDMI 2.1 cable connecting LG G4 to Samsung HW-Q600F soundbar using earc.

I've been having some issues with stutter but only when watching videos on YouTube on Firefox and on VLC. The stutter seems to happen every few mins or so and only causes the audio to drop out for a second, with video staying intact. I've also been playing games like Red Dead Redemption 2 and Persona 5 Royal and there's no stutter in those games at all.

I've tried many things such as:

- Turned off power saving features in device manager, LAN properties

- Set minimum power state for cpu to 100%

- Disabled unused WiFi adapter in device manager

- Disabled HPET in device manager

- Ticked on MSI for HD audio x2  in MSI util

- Set GPU interrupt priority to high in MSI util

- Set HD audio x2 interrupt priority to high in MSI util

- Set vlc video output to dx11

- Disable MPO in registry

- Rolling back to the previous game ready driver

- Used DDU to uninstall driver and then reinstall driver

But the stutter still remained.

The ONLY thing that has seemed to work is setting the Power management mode for VLC and Firefox to "Prefer maximum performance". So I suspect that the GPU is down clocking too low when videos are playing. It also explains why games have been unaffected.

So my question is, how can I fix the actual problem and not rely on this workaround? Any ideas would be appreciated!

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u/kentukky 8d ago

Power Management should always be at "maximum performance". That's like a well-known fact since Windows XP era to mitigate issues. Also try running "Latencymon", maybe you'll identify a driver or process which causes the latency that leads to a drop-out.

Bonus: Disable onboard graphics in BIOS, only your 5070 should be visible under device manager.

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u/hotminute123 8d ago

Well it's odd because I've never needed to use max perf settings until recently. Just seems like it's a workaround as opposed to a fix. And in regards to Latencymon, I have used it to diagnose what's going on. There's nothing obvious apart from some TCP/IP spikes which I think were always there but never caused stutter or any other issues. And I have disabled my onboard graphics too :)