Very slow Viewport animation, but system is not overloaded

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1

Hello Everyone.

I have dual CPU motherboard Xeon E5-2678
32 GB RAM
512GB NVRAM
RTX3070
4k Dell Display
Win pro 10 64, Blender 2.9, Blender 2.93 x64

Final render for Cycles and Eevee works pretty fast
BUT
When I run animation in 3D Viewport, also in Solid Mode
More less simple scene - Low Poly, no hidden Modifiers
50K faces for 21K Objects

FPS is around 6…

But My system CPU Utilisation is only 8%, and 40% for GPU

I tried to find something in internet - Nothing with similar case.

may be someone faced with that issue? may be exists some specific configuration options which allow Blender to use more resources?

slow_viewport
slow_viewport3560×2109 1 MB

2

what happened at the end? did you end up solving your problem? I think is because of your 4K display, it takes more memory and bandwidth from the GPU/CPU to render your workspace, there is an option where you can change the resolution of your viewport