[SOLVED] New GPU that cause insane unstable fps - what could be the reason?

[thedigitalis]

I know little to none about PCs and components so forgive my maybe dumb question, however my issue is very annoying and i would be over the moon if someone can help me. I will try to list as many specs I can, but feel free to ask if you need more info from my part.

I play the game csgo, and I experience an extremely inconsistent and low fps count. Usually it ranges from 100-240, ususally it flimmers around the 140 mark. On VERY rare occasions it performs the needed 300+ fps, which is what im aiming for. I'm playing on 240hz refreshrate at res 1152x864 4:3 Black bars stretched. Changing the res or the refreshrate does nothing, dont work. Ive been in a very long conversation with Nvidia support who failed to fix the issue. So im literally desperate over here for anyone to help me!🙁
Btw, it seems the more apps (Especially Chrome and Tidal) That are open at the same time, the worse my fps gets. But even tho no other apps are running it's stil far from optimal.

I've tried reinstalling the drivers and formatting the pc, does little to none.
I've not touched anything regarding overclocking as I have no knowledge on how that works and even if that would help.
Feel free to post any possible fixes tho, much appreciated!

My specs is:
GeForce RTX 2060 OC 6gb
Corsair VS450 V2 PSU 450W
-The gpu producer recommends a 550w and I could easily buy that for my pc, but as I understand from previous threads on this forum, a "low" power supply shouldn't affect fps.
i5-760K Kaby lake 3.8 ghz
GIGABYTE GA-z270-HD3P Motherboard
Crucial Ballstix Sport LT
Cooler Master Hyper 212 Evo CPU cooler

 

[rgd1101]

Need a better quality psu

 

[tuffluck]

i agree with low psu, but also 140fps and 300fps the eye can't really tell the difference. if you were talking 90 vs 40 that would be different. that gpu can handle games way more intense than that, so getting a new psu down the road would make sense.