Before you replace your graphics card, try these fixes: clean cooling, better airflow, fresh thermal paste, and a smarter fan ...
Your gaming woes might be linked to overheating VRAM, not the GPU core ...
This post helps to fix Radeon Host Service High GPU, CPU, Memory, and Disk Usage problem on a Windows computer. Some users have complained that when the Radeon Settings: Host Service (AMDRSServ.exe), ...