OBS struggles at ~10 FPS with Vulkan drivers 455.46.04 and 455.50.04

Graphics / Linux Linux
,
1

With driver 455.46.02 OBS easily streams at 1080p60 to Twitch, however, upgrading to 455.46.04 or 455.50.04 (I haven’t tried the ones in between) makes the frame rate drop to ~10 FPS or lower.

Is this a regression/issue in recent drivers? Do I need to change something in my settings/setup for this?

(Running Arch Linux with the linux-hardened kernels (currently 5.10.11-hardened1-1-hardened), OBS 26.1.1. Let me know if you need any other info about my setup.)

2

Do the mainline 460 drivers also exhibit this or just the recent vulkan betas?

3

OBS seems to be fine with 460.39.