Wildly inconsistent FPS issue

[TR1985]

I'm having an amazingly annoying problem when playing CoD:MW. Sometimes I can play with no issues at all for hours and will be hitting 70-100fps no problem, then suddenly I start getting fps drops to 20fps for a few seconds then back up to 70fps and then back down to 20fps. Its not being caused by overheating as my card was a pretty consistent 71* while playing

When this drops my FB Usage % & Power % drop off while Frametime increases significantly.

My spec is as follows:

CPU: AMD Ryzen 7 3800X @4.2Ghz
RAM: Corsair Vengeance LPX 4x 8GB
GPU: GeForce RTX 2070 Super
Display: 3840 x 1080, 120hz

Has anyone got any suggestions on what I could try because it's driving me insane! You can see the FPS drops below, sometimes this even happens in the middle of a match

 

[TR1985]

I have the same issue. Is it a few multiplayer maps only by any chance? Does Warzone perform faultlessly?

I don't play warzone so unsure but it seems to affect any map in multiplayer. Ive since stopped playing and moved on to RDR2 and not had a single issue so I expect its something to do with CoD