both. when I open overwatch the cursor itself is at a higher dpi than outside of ow, and that increase is in game as well.
Is your Windows mouse precision / acceleration off? You say this happened after you upgraded mice?
yeah. though I think I just found the problem. I checked on one of my other games and the same thing happened. apparently the mouse changes profiles when i’m in game, and since I haven’t changed those it ups the dpi on the games.
Maybe a conflict with razer synapse and logitech softwares? It shouldn’t. But if you don’t have razer products I’d uninstall that
Maybe try updating the Logitech mouse software / drivers? I have mine set to only 1 profile, so it can’t change accidentally.
no, its just the Logitech software changing profile to the games like its supposed to without a specific setting on. just fixed it by clicking the lock in the software to keep dpi the same across all profiles.
I apparently didn’t, I wasn’t at home when you asked so I didn’t know what you meant. I did have them on(I forgot turning them on) so yeah.
Glad it worked out. 
thx. I’m glad I opened up another game, and it found out the problem.