Poor fps with new build on CSGO

I've recently built a new computer (last month) and i feel like the fps i am achieving in game are no where near what i should be considering the specs and the settings that I play on. At some points on a Deathmatch on dust 2 at some points it dropped to 100fps roughly, and usually when im playing in game im around 150-200. I feel like this is heavily under performing. I have fps_max set to 300 so my fps cap shouldn't be an issue.

Thanks for any help.

build: https://uk.pcpartpicker.com/list/tC33nH

Video Settings: https://steamcommunity.com/sharedfiles/filedetails/?id=1652697620

https://steamcommunity.com/sharedfiles/filedetails/?id=1652697657

 

I'll have a look, thought i had but will dopuble check tomorrow