Hi there, newbie in the forum here.
Been facing a problem with my Sapphire RX480 8Gb OC Edition. It supposedly is powerful enough to run some games, but been finding lots of stuttering in some, which leaves me baffled. In Hitman, Nier:Automata and Shadow of Tomb Raider, the first two games i run in high settings and it struggles a bit with some frame drops, but just some periodic hickups. In SoTR it stutters in most playable scenes, getting worse through the end of the game. The start menu is slow as hell. Just as experience, tried it in low settings and even there i get a bit of stuttering too.
This surprises me because in a lower spec system i have, those games run smoothly (i5-3330, 8Gb DDR3, MSI 1050Ti LP).
Tried with older and newer drivers, getting worst results with Adrenaline 19.3.1. Even Catalyst series gives me problems (but better than newer one).
Heaven 4.0 reports a score of 1199 (FPS:47.6, Min:26.2, Max:92.4) with Extreme option, DX11 and windowed 1600x900 8xAA. Done other test to compare with one guy in Reddit and got a score of 1354 with the same options as him, while his score was 1913 (2 years ago test). Funny thing is that Heaven recognizes my RX480 as if has only 4Gb, while CPU-Z clearly says 8192Mb GDDR5.
The CPU temps never reach 35C and the GPU temps never reach 55C, so it is impossible to be thermal bottleneck.
Could it be that the board is struggling for having to drive 5 simultaneous screens that much?
I usually run games in windowed mode, but the problem is present in fullscreen too.
System specs in my profile.
Any ideas as to why is behaving like this?
Many thanks in advance.