RX 480 8 GB crashing/perfomance issues
For the last few weeks i dont know what happened with patchnotes or drivers but my rx 480 8GB just completety struggles to play this game.
I get 100-144 fps (locked on 144fps) because i have a 144hz monitor. But the game itself isnt showing 100-144 fps. My character is walking faster then the game it stutters the whole game long and i cant even shoot.
My gpu is ovc'd to 1350 mhz and memory clock is at 2150
First i thought the ovc wasnt stable so i brought it back to default settings and the game perfomance didnt change at all.
I noticed with the MSi afterburner that my gpu keeps down clocking from 1300mhz to 700mhz and sometimes even 500mhz!
I can barely even start the game up in full screen otherwise it crashed or freezes my whole pc, and apex legends is the only game i cant play anymore!
Can someone please help me what the problem is, because i am losing my mind
EDIT: YES i reinstalled my windows & checked drivers/updated everything so there is totally nothing wrong with my PC
Specs:
ASUS z370f motherboard
i5 8600k ovc to 4.5 ghz stable
16gb ddr4 3000 mhz
256 gb SSD and 1TB HDD
AMD rx 480 8GB gaming X