Gpu usage dropping to <10% and goes back to normal

[Shinobi 02]

My gpu usage is dropping from >80% to <5% for a second and then goes back to normal. This is generating stuttering and frame drops. 
How did I find it: I was having frame drops so I decided to analyze the cpu/gpu through msi afterburner. Then I noticed that my frames were dropping when my gpu usage was falling significantly for no reason. 
Any recommendation to improve this will help. Tq (This is mainly happening in GPU intensive games like gta where usage is 80%, not when usage is 30-40%)

 

Specs:-

 

Laptop: Asus ROG Strix-G531GT

Cpu: i5 9300H

GPU: GTX 1650 4GB

 

 

[Guest]

How are the thermals? 

[5x5]

Sounds like either heat or CPU bottlenecking. GTA is a very CPU intensive game

[Shinobi 02]

6 hours ago, Konrad_K said:

How are the thermals? 

Avg GPU temp. is around 75, so thermals are pretty solid for a lap. Can it be a defective gpu loosing grip during high usages (idrk how a gpu works).

[Shinobi 02]

6 hours ago, 5x5 said:

Sounds like either heat or CPU bottlenecking. GTA is a very CPU intensive game

Avg cpu usage is around 50 and it tends to increase when required and when there is high particle density (in GTA5). Any possible way by which I can confirm the presence of cpu throttling?

[5x5]

1 minute ago, Shinobi 02 said:

Avg cpu usage is around 50 and it tends to increase when required and when there is high particle density (in GTA5). Any possible way by which I can confirm the presence of cpu throttling?

Use HWiNFO 64 - it'll give you a good idea of what your situation is like.

[Shinobi 02]

2 minutes ago, 5x5 said:

Use HWiNFO 64 - it'll give you a good idea of what your situation is like.

I will check it out. Is there any way by which I can stress test my gpu on high usage/frequency and analyze it. Coz it seems like my gpu is loosing grip during high usages.