Why is it that on some games, when I crank every single setting

VRAM isnt everything, you wont always use all of it or even close.

>>57603564
BANDWIDTH
fucking bullshit spam filter.

>>57603673
>>57603697

Ah so it has more to do with the other specs.. at this point, is it the 390 that is not doing well or the i5? I always heard i5 is all you need for games but it lags hard when I try to do anything intensive such as record gameplay.

>>57603564
Your RX480 is the bottleneck

>>57603835
Rx 390

>>57603564
>measuring performance by the amount of VRAM

You're going to have to use a program like MSI Afterburner and see what's hitting 100% utilization. If it's your CPU, that's the bottleneck. If it's your GPU but not the CPU then that's your current bottleneck.

Tessellation eats up a lot of performance on AMD GPUs with hardly any visual gain. I turn off Tessellation in FFXIV and my framerate goes to 80-90+ instead of 45-55

>>57603564
>>57603805
>>57604240
If by some games you mean Witcher 3 you should consider that Hairworks is an Nvidia thing and hurts everything but their latest cards badly.