Low GPU utilization

Hello , I always have low GPU utilization ,
my GPU utilization is always around 40% only and of course I have low FPS
Sometimes I have around 22fps with 30% GPU utilization
How to increase it to be around 80% or more?

Also I have stutters sometimes freeze for 2 secs on touchdown , I tried to turn the touchdown smoke off and setting airport vehicles to 0 with no solution

My graphics on ultra with 120 TAA 1080p
my GPU is RTX3060 with 12GB of Vram latest Nvidia driver

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