Please fix problem with CS:GO fps once AMD

I have R9 290 and RX 480. It have same problem

 

I try any method and driver to fix this problem,But not work

Main Problem

Freesync (75Hz) : on  >  Lag and Low FPS only around 40 because 0 % VGA loading

Feesync : Off > No problem now

 

I waiting for fix problem with new driver since last year please

please  pleaseeeeeeeeee fixxxxxxxxxxxxx before i'm rage and buy nvidia and never buy amd again.