Mouse fast in games

[Antonio_beqa]

Hello i switched from 27 inch 1080p 144hz monitor to 55 inch 2160p 165hz monitor

I have 2 mouse old cheap one and new G502 logitec. Old mouse does not have any softwere to chabge dpi , but in desktop and in games it works like normal  while switching to g502 i use 2400 DPI with enchanced ponter disabled , also disabled profile changes depends on games but still if in one game old and new mouse sensitvity same on another game G502 asks me to drop DPI to have same sensitvity like old mose cant understand 

Why old cheap mouse can be normal sensitvity at desktop and all games while  g502 needs different dpi at Desktop and in all games different DPI confared to my old mouse ?