RX480 FPS drop in all games

Describe your system:

GPU : MSI RX 480

Desktop System

OS : Windows 10 64-bit

Driver : 17.4.2

DD : AcerXF240H, Displayport

Motherboard : Z97X-Gaming 5

CPU : i5-4690K

Power Supply : 550 Watt Corsair RM Series Modular 80+ Gold

RAM : 24gb


Describe your issue:

since I got this card in January, I mainly played league and experienced random FPS drop in League of Legend but first I thought its the games fault. Now that I play multiple games I experienced random FPS drops in all of them. I looked things up on the internet, deinstalled my AMD drivers with DDU multiple time and reinstalled the latest ones, ran multiple virus scans and basicly re-built my pc and tried to remove all the dust from each part. I really dont know what I can do more.