random vsync drops

[Tyrannusnocens]

So I started getting this issue like a week or 2 ago.

I have my frame limited and synced to 120hz,as I'm in the orbiter,or looking at the foundry/arsenal/codex so on so forth my game will suddenly sync down to 60fps for a good minute or two.

It's not like my system cannot handle the game at the setting either,for reference my PC specs are in this list

https://pcpartpicker.com/list/MHzVjy

and I am running at my monitor's native resolution of 2560x1080 with gsync enabled (my monitor is 144hz {overclockable to 166}but I run it at 120 since I don't notice much difference between the 24fps)

so I don't know why this is happening,

any and all input would be gladly appreciated,and any other information needed I can gladly supply.