I only have the FPS problem when switching between screens using PiP with maximizer (not the soft-lag problem). if anyone is able to help with this, i'd greatly appreciate it!
screens set to 10FPS for background and 40 FPS for main. however, i've notice it would sometimes bug and the main screen would stay at around 15fps. multiple switches often does not fix this problem, at least not for me. hehe. again, any help is appreciated.

I will also check Ughmaheadhurtz' suggestions too, thanks a bunch!