Hi everyone, I hope you're all staying safe at the moment. I have a Sapphire RX 570 Nitro+ 4GB, and have started to experience weird frame rate issues which are inconsistent. About a month ago I noticed FPS fluctuating in many games, including NFS, Sims 4, Far Cry 4 (this one was very obvious), and not only was the frame rate being hit, but the FPS would fluctuate severely, moving up and down by up to 30fps in about 1/2 second increments. I also noticed the frames were lagging frequently, it looked like someone was speeding up and slowing down the game. I used FRAPS, AMD Overlay and the myriad game launcher's FPS reporting software and kept getting the same result. Using Unigine Valley I find the same result - wildly fluctuating FPS and very obvious stuttering. I start to deduce my card may be dying (ex-mining card that I paid next to nothing for 3 years ago). Using DDU I uninstall the drivers and reinstall them, and voila! The problem is fixed. FPS go back to where they were expected. Then I run Valley and get good results and consistent FPS there as well. However, if I turn the machine off and back on later, the FPS and frame lag issues start again. What I have done system specs are in sig): 1. Updated Windows; 2. Tried newest Windows certified AMD drivers, both with and without the fancy software; 3. Updated all chipset drivers; 4. Tried 2 old driver suites (2019 and 2017 post-RX570 launch) both with and without the fancy software; 5. 2nd PCIe slot; 6. Different HDMI cable; 7. BIOS settings - removed all overclocks (including RAM now running at 2133MHz), made sure graphics are set to PCIe output, and set the PCIe version to 3.0 (was Auto when the issue started) 8. Different PCIe power cable (PSU is an Antec 650W Earth Pro something something, around 12 months old); 9. Scanned for viruses using both AVG and Defender; 10. Reinstalled Windows from scratch. Really at wits end why a fresh install of drivers would work, then not work within minutes. Has anyone else got any suggestions? I don't have a second power supply to check with (not one with the requisite 8 + 6 pin plugs, or with enough juice) so I can't test it out on a second machine without removing the PSU. Results below from Valley at High graphics/DX11/1080p/2 x AA which matches results prior to this issue. https://imgur.com/uwD2vAH Please if anyone can give me some pointers I'd be very grateful. TIA.