nitro an515-43 why does my fps go from 100+ to 10 and below while playing?

I had no problems playing before on the nitro an515-43, recently after i downloaded windows 11, everything started to freeze, my games have been going from 100+ fps and then dipping down into the 10s, i reverted back to windows 10 but it still happens, i searched online for solutions, did a lot of them but the problem still occurs

[Edited the thread to add issue detail]