My computer was getting really dusty so I decided to clean it. Ever since, one of my GPUs overheats whenever I start up a game. Sits on 30-40°C idle but jumps up to 80°C when gaming. I didn't remove anything while cleaning so I thought I don't need to replace the thermal paste. All of my fans are working just fine too.
Specs:
GeForce GTX 970 x2
ASUS Z97-DELUXE Mobo
Specs:
GeForce GTX 970 x2
ASUS Z97-DELUXE Mobo