FPS and GPU usage drop when moving the mouse

[LowEndPCGuy]

Tried to get an answer here a few days ago, decided to try again

Recently I've began playing Warzone, and immediately ran into this issue, on this game specifically. When I load up the game, everything runs perfectly fine, but if I tab out, or open any sort of overlay, when I return, moving my mouse drops the framerate from a steady 60 to the mid 20's. I opened a performance graph, and noticed that when I moved the mouse, my GPU usage also drops from around 90-100% to nearly 20%. Needless to say, this makes the game nearly unplayable, and requires a restart every time this problem occurs. My system runs an i5-3470, and a ZOTAC GTX 970 4gb, with 16gb of DDR3 RAM, and I'm sure this is above the minimum specifications. I've tried lowering my mouse's polling rate to 250 with no result. If anyone knows how to fix this, please let me know, thank you!

[MadGoatHaz]

Yeah, it's a known cod issue. Seems there are only two known workarounds:

 

1. Play game is borderless window and loose a little performance

2. Use a secondary windows virtual desktop and switch between them instead of alt tab. 

 

Suggestions here for reference: