I Like Play Brawlhalla But This is now not a good thing

Ok i have a potato Pc Like 2 gb ram intel pentinium,Well i play on widowed mode bc I have windows 10 (idk why) (i need to change it) To play at good fps and not in 20 15 fps. (And yes i main scythe on 15 fps and it hurts) but now with the lag error I just cant play sometimes bc that error just ruin my games :/