My Gpu is under performing recently

[Welheizel]

pc specs :
i9 12900k
3080ti Gigabyte oc
MSI PRO Z690-P DDR4 (MS-7D36)
16x2 Corsair Vengeance RS DDR4 3600MHz 
1000W asus rog strix gold+ 

Since i've bought this pc i have had constant performance, and due to me mostly playing GTA 5 i usually get 180 fps on ultra settings, which is expected on my system, recently i've noticed fps drops during GTA 5, so i turned on Riva Tuner just to find myself barely hitting 100, sometimes it spikes to 140 then drops immediately, 
Using HWiNFO64 both my CPU and GPU don't reach 90c thus no thermal throttling and i've replaced thermal paste yesterday and cleaned it all 

FYI this gigabyte card has malfunctioned 7 months ago and i had to send it back for repair and i've been having this ''lower performance'' issue for about a month i believe
 

No i have never overclocked anything or tinkered with any setting in any capacity

weird thing: recently made a fresh install of windows and upon launching GTA 5 i got the 188fps i usually get, a day later it returned to being 120 average, it seems to fluctuate to 140 even during intensive scenes then drop to 120 or even 90 despite nothing intensive happening 

[Alkaid]

47 minutes ago, Welheizel said:

weird thing: recently made a fresh install of windows and upon launching GTA 5 i got the 188fps i usually get, a day later it returned to being 120 average

 

 

 

 

I will suspect Windows automatically downloaded a wrong driver... try to install the lastest driver manually (download it from Gigabyte's official website). If it does work, then search "how to prevent windows from automatically updating GPU driver" on google (or bing if you want) to prevent it from repeating.

[Welheizel]

6 minutes ago, Alkaid said:

I will suspect Windows automatically downloaded a wrong driver... try to install the lastest driver manually (download it from Gigabyte's official website). If it does work, then search "how to prevent windows from automatically updating GPU driver" on google (or bing if you want) to prevent it from repeating.

Should have mentioned that i used DDU and nvcleaninstall to install the newest driver and that has not improved my fps