but i can give you many information you can try.
- first look have your gpu manufacturer bring a new vbios
- go to bios and change pcie from auto to pcie 3.0
- dont use msi afterburner or other programms like this
- try this special driver from asus 19.30.02 Gaming-Grafikkarte TUF 3-RX5700XT-O8G-GAMING | ASUS
- disable everything in driver setup like freesync etc...
- bios update your motherboard
- use eyery time DDU uninstaller for your gpu driver
- and this all steps dont work sell your card!