List your full PC specs .. including the make/model/age of your power supply
How is your air flow thru your case? Have you ever replaced the thermal compound on your GPU? (might help , might not)
Are you running separate power cables to each power input on your GPU?
I used to run the ASRock 5700xt reference design (blower style) and it was a great card .. I had to trade it for my now 6700xt to afford it but really wanted to give it to my daughter .. I was finally able to find a great deal on an MSI 5700xt Mech OC and it's been a great card for her .. the 5700xt still beats out the RTX 3060 in most games
Your issue could be a failing card .. it could be a heat issue .. it could be a power delivery issue
My wife runs an RX 550 2GB .. she was getting crashes and driver timeouts on her setup. I tried a whole bunch of different drivers and tweaking ..checking temps .. messed around with memory speeds .. etc .. to no avail. I replaced her 500wt Thermaltake RGB 80 Plus (White) power supply with a 600wt Segotep 80+ Gold rated PSU and all her GPU issues went away ..