Poor graphic performance after TW 20250510

A possible kernel bug at play?

Are you able to capture the kernel logs and post here as preformatted text (rather than a screen shot)?

sudo journalctl -b | grep -i "amdgpu"

If it is too painful to so with the latest kernel, you can boot from a previous kernel and get the log from the previous boot perhaps.

Also, please provide the detailed output from inxi -GSaz

You could try using this kernel boot parameter
amdgpu.dcdebugmask=0x210

Could be related to