Hey guys... I need help here. So, I've tried reapplying paste on my RX 580 4GB (Sapphire Pulse), and after I did, temps are now 83-84 deegree when gaming, and CORE is fluctating, it is dropping below 1366 mhz (which is stock clock). I've tried oppening graphics card again, cleaning, applying paste again, but it's the same. I changed the paste because temps were a bit higher already, but core wasn't doing that. I did this many times, and never had a problem like this. Paste I used is cooler master e1 ic essential. GPU is only a few months old, and I should have went to the store with this, because I voided the warranty not, but due to the covid-19 that store is not working atm, so I decided to do it myself. Should I get a better paste or what? This ony usually did the trick on GPU's I had before, like MSI Gaming GTX 960 2GB, or AMD R9 270X 2GB. EDIT: The issue is now SOLVED, finally! What I did is this: Changed thermal pads with new, 0.5mm ones (Sapphire Pulse uses 0.5mm pads). Only on the back of the GPU I've put a 1mm one (one between board and backplate). Cleaned chip and heatsink, replaced paste (I used Noctua NT-H2, and I've put a bigger ammount of it). Then of course put everything back on, tightened the screws, and put the GPU back in case. Tested it in Furmark stress test for about 30 minutes, temps were around 74-75c in full load, while fan was at 50-53%. It wasn't like this even when I've bought it, as fans were much louder. Played RDR2 for about 40 minutes, all is fine, core is stable (no longer dipping below 1366).