is there any way to fix the lagging problem, its feels like 15fps

This guy has every stat advantage over me except strength. his health is too high and deals up to over a hundred damage. HOW DO YOU WIN!?

I'm trying a lot of different stats and builds, but mostly the champions do a whole lot more damage to me then I do to them, winning seems impossible when I reach the slave boss. Are there any tips on maybe a different weapon or something? Trying to get all the achievements and wanted to start at the first game of the series....

you have to control each character in order to save items and levels, was hoping that the AI could do thier own thing with the characters i made :(

Both this and V, are just a blackscreen for me. I can still here audio but the game itself is black screen. Specs: i3 12100F RX 6500XT 16gb DDR4