So, some stuff I see:
not related:
мая 19 13:07:51 cachyos-zer0 kernel: bluetooth hci0: Direct firmware load for mediatek/BT_RAM_CODE_MT7961_1a_2_hdr.bin failed with error -2
This is an issue of the 6.9 Kernel and it searches for a missing firmware. You can find here an solution:
Maybe related:
мая 19 13:07:53 cachyos-zer0 kernel: amdgpu 0000:0d:00.0: [drm] REG_WAIT timeout 1us * 100000 tries - optc1_wait_for_state line:841
мая 19 13:07:53 cachyos-zer0 kernel: amdgpu 0000:0d:00.0: [drm] REG_WAIT timeout 1us * 100000 tries - optc1_wait_for_state line:841
мая 19 13:07:53 cachyos-zer0 kernel: amdgpu 0000:0d:00.0: [drm] REG_WAIT timeout 1us * 100000 tries - optc1_wait_for_state line:841
Somehow your iGPU seems to make some issuss and waiting for a state. Could you maybe try to disable the iGPU and run it only via the dedicatd GPU?