Question my gpu utilization is 100% and processor utilization is low while gaming? is it issue?

[AZE0018]

my pc specs are ryzen 5 3500x ,
amd rx 480 msi gpu
16 gb of ram
my gpu is utilizing 100% during gaming but processor is oly 30 to 40 percent utilizing, is it a issue?
the temperatures are normal but there are lags and slow down of games performance, and sometimes face sudden fps drops down in the games

 

[rgd1101]

try lower the game detail?

malware scan the system?

full system spec? include brand and model of the psu

 

[AZE0018]

thankyou for your response
my full specs are:

gigabyte A520M S2H mobo
amd ryzen 5 3500x
MSI amd rx 480 4gb
reddragon 600 watt psu
16 gb 3200mhz RAM

i have try clean reinstalling driver but same.
Driver gets installed but when i start a game after 5 minutes of play the game shut down and i come to desktop automatically, some games don't shut down but shows a big lag or slow down between game. I have tried reinstalling windows and drivers serveral times. sometimes it gives error that "amd driver timed out" or amd is not picking up driver and even it happens 2 to 3 times that gpu driver automatically gets uninstalled. I have attached the gpuz screen shot.

 

[rgd1101]

https://forums.tomshardware.com/threads/my-rx-480-is-not-picking-up-drivers.3762724/#post-22696887
haven't try another psu?