in game sensitivity

Everytime I play a game, whenever I zoom in and back out, my dpi will drop steadily. I know that my scoped sensitivity is different than my un-scoped sensitivity but it's both that lower. Any help is appreciated.

Hey Guys, I have a doubt.. Recently I got an MSI Geforce GTX 1050ti single fan edition.... My PC case is a prebuilt HP case (not a big one its an mt) So while using the PC the idle temp of GPU is 30-40° and while Gaming its around 72° on most games but in some games , like the witcher 3 it...