How do I stop Wuthering Waves screen artifacts on Biostar A320MH?

Wuthering Waves combat was ruined by screen artifacts from a loose GPU slot on my Biostar A320MH PRO. I re-plugged the GPU, but it just crashed the system. GamePP’s Driver Conflict Detection pointed to physical instability. I tightened the screws and added 3mm silicone pads. AIDA64 shows zero artifacts now. VRAM temps hold at 65-70°C, and GPU temps are stable at 70-75°C, with usage at 8.0-9.5GB.