Hell I have an issue with my new gpu its running games quite poorly. I installed the official amd drivers from their site rather than the card and it has good desktop performance.... but the games fps are horrible even worse (1-25 fps, while on the r7 250 200-295 with same pc specs, same settings on a game like csgo) than my previous card, the radeon r7 250. I have a dell optiplex 990 with a Intel core i7 2600 (no k,not unlocked) and I already asked serveral professionals in person and they said my PSU should be way more than enough. I use DDU to remove the intel drivers, that didnt work. I removed the amd drivers and reinstalled them, that didint work. I reinstalled windows, change pcie slot, and tried another dell of this kind still didnt work. I need help asap