My XFX RX 590 Fatboy seems to have horrible stuttering no matter the games I throw at it. Those games seemed to have run relatively fine with my GTX 1060 6GB. The games barely feel any smooth; I get high FPS like I should be, yet the frametime spikes are quite noticeable as I can feel the stutters, unlike in the benchmark videos. I've also did the following things, yet the issue carries no matter what. The 12V rail cables are fully connected (and separate ones are utilized), so the lights on top of the power connectors are both blue.
What I've tried:
* Tested every single stick of RAM (and tried running at 2133MHz) * Moved the game from one of my HDDs to my M.2 SSD * Updated to the latest BIOS (and reset the settings too) * Activated/deactivated VSync (no effect whatsoever) * Rolled back drivers by 6 months * Fresh install of Windows 10 * Yes, I did try FidelityFX, but this didn't resolve anything with stutters * Used the Gaming preset in the Radeon Settings, which turned on Anti Lag, but this didn't help too * Tried the Balanced & High Performance power plans to no avail * PSU is more than sufficient to handle the 590's power draw * Last time it was RMA'd I heard no issues from the GPU; therefore, it's not the GPU itself being faulty * And yes, I know y'all gonna complain that the 3900x is "too overkill" for the RX 590, but I'm settling with it so I can save up on my money to eventually get with the times and snuggle up a newer, powerful enough Radeon.
The weird thing is that my GTX 1060 works pretty well and doesn't have severe stuttering most of the time but that changes once my 590 is in it.
Here is my YouTube video of stuttering in action (use the chapter markers or skip ahead as I left the footage uncut):
Additionally, for further proof of stuttering, here are 3 frametime graphs proving so (sometimes, especially with the 3rd one, the stuttering becomes too constant predictable):
"Last time it was RMA'd I heard no issues from the GPU; therefore, it's not the GPU itself being faulty"
I would try testing it in another system, make sure I had a good solid OC on anything if you are OC'ing to make sure there isn't something being pushed a little too far. Somehow with the 590 it's showing up but with the 1060 it's not? It seems like a strange problem, I hope you get it narrowed down. From the subject it seems you changed cases, so if thermals are OK, it should not matter. Is it possible that the card has a minor problem that you notice and needs to be RMA'd? If it's under warranty, and you could try another card or similar AMD card and get no problems that points to a problem with the 590.