I have bought and been using Radeon rx 470 for a few years. It was working fine until I opened up the computer case to clean some dust. I vacuumed the entire inside including the graphics card. Also, I noticed the card was sagging, so I put a stick where it was sagging to level it. I did not remove any wires or cards.
Then I turned on the computer and then the first thing I realized was that resolution was not the same as before. It was much smaller (size of icons got bigger). When I turned on starcraft (the original, not sc2), the animation on the menu was lagging and my mouse was also lagging. I don't know what is going on. The device manager says the device is working properly but the gpu is apparently underperforming. I tested with other games and the result is the same.
How can I fix this issue? What has gone wrong?
CPU: Intel i3-6100 CPU @3.7ghz
GPU: Radeon RX 470
Motherboard: ASUS B150M-A/M.2
RAM: Crucial Ballistix Sport LT 8GB (2 x 4GB) DDR4-2400 Memory
Power: Corsair CXM 550W 80+ Bronze Certified Semi-Modular ATX Power Supply
Hard: Samsung 850 EVO-Series 250GB 2.5" Solid State Drive