VIEWPORT STILL SLOW AFTER LAST BUILD UPDATE

Question for Blender developers(and for anyone knows about this issue). You said that the performance was improved having in the same time bones and meshes with subdivisions/materials on them. I only have an character with an subdivision level of 2 and bones only for biped and still have only 4.96 FPS. I'm getting the full speed only when checking simplify. What's the catch here? I have an Threadripper 3.5GB 32 thresds proccesor, 64 GB of RAM, 2 Gpus (GTX 1080 TI) and still no chance to have faster playback in viewport with an easy setup for character. So, what you guys are using as hardware/OS when you are reviewing changes?