Shader Stuttering on laptop

I've been experiencing terrible stuttering and cpu overload since December. Sure, I don't expect 1080p/60fps on my laptop, but I've started Affliction league with zero stutter issues. I am running POE on a laptop with Intel(R) Core(TM) i5-10210U CPU @ 1.60GHz 2.10 GHz, 16GB RAM and Intel UHD Graphics. Since yesterday my CPU is constantly 100% loaded and the shader bar is always full, so the game has 8-9 fps versus 30+ previously.