Underperforming graphics card?

[matejdona]

When I was playing Warframe today, I couldn't help but notice that my framerate is extremely inconsistent. so I've tried turning the FPS meter on and found out that it was sometimes dropping below 40 FPS. I have Vsync with 60 FPS cap on, and it never dropped below that before. My PC crashed earlier this day and AMD settings said something about Wattman (which I've never touched) being set to default due to an unexpected system failure, so I've run UserBenchmark, and this is how my scores look like: https://photos.app.goo.gl/wBJkVbr5zm8WMRco2 . I had the feeling that my RX 470 is underperforming in some games before, so I ran the benchmark about 3 weeks ago. The scores were way below average, but still not nearly as bad as they are now. What do I do about this? Could it be caused by the shitty PSU which I've written about here? http://www.tomshardware.co.uk/answers/id-3548850/psu-making-terrible-noises.html

 

[dontlistentome]

Assuming you have a 60hz monitor, if you run with vsync on then any time your framerate drops under 60fps, it'll be halved. So if it drops to 56fps, you'll actually get 28fps.

That benchmark says your card is the culprit, and a power supply issue could cause that. I wouldn't bother troubleshooting if you already know your PSU is substandard. Replace the PSU with something decent and then see what's what.

 

[matejdona]

Ok, here's a couple of things: I've robbed my brother's PSU from his PC to try if the problem was caused by my PSU. It was not. However, I found out that for some unknown reason my GPU's clock was decreased to 600 MHz. The framerates went back to normal after I've increased it back. However, the benchmark keeps saying that my GPU is still performing way below exceptions, only not as much as before. And to that system crash: it was apparently caused by Asus' GPU Tweak. After I've tried to use any of the predefined profiles, the PC immediately crashed, so I've uninstalled it.