- Remove i915.force_probe=!a7a0 xe.force_probe=a7a0 from kernel boot params
- Add video=HDMI-A-1:1920x1080M@60D to kernel boot params
- Configure Kodi to run the GUI at 1080@60
- Configure EGL/VAAPI (not D2P, not DRMPRIME)
- Configure the whitelist for 3840@60/59.94/50/29.97/25/24/23.976 and 1080@60/59.94/50/24/23.976
- Configure adjust refresh (start/stop)
- Configure allow rate doubling
Then play some media and pastebin another debug log.