[SOLVED] PCI-e bandwidth changes from 3.0 to 1.1 after some time.

[Naveen_k09]

hey,
I year before i bought a low end Lenovo Ideapad 330S for general use only.
After sometime I decided to game on it.
Games usually were not very demanding ( CSGO, Valorant, GTA-4 )

But only after 5-7 mins of gameplay my FPS tanks hard
CSGO goes from 170 fps to below 60.

same issues with other titles too.

I installed ThrottleStop to investigate the issues. I couldn't find any signs of overheating or thermal throttling with both CPU or GPU.

So I decided to observe the clock speeds of both GPU and CPU under stress using Heaven benchmark and GPU-z.

In GPU-z I observed that my PCI-e link from GPU gets converted from 3.0x4 to 1.1x4 after 5 mins of GPU stress testing and even after games.

If anybody know how to fix this using any registry or software that would be great.

my laptop specs are as follows-

i3-8145u
AMD radeon 540 2g gddr5
16 gig 2400mhz dual channel RAM
win 10 home

 

[kerberos_20]

pcie 1.1 is pretty much power saving feature
you can change that in windows settings - power plan

turning it off will make your battery drain faster, but pcie wont downclock

 

[Naveen_k09]

pcie 1.1 is pretty much power saving feature
you can change that in windows settings - power plan

turning it off will make your battery drain faster, but pcie wont downclock

well i followed your suggestion.
But the problem still exists after 10 mins of stress test.

thanks btw.