Catalina 10.15.5 usb mouse stuttering and general lag

[c3sco]

I've installed macos catalina 10.15.5 on a Gigabyte B450 Aorus Pro with a Ryzen 5 2600, following dortania's opencore guide.
Everything works but i'm experiencing a general lag, and it's more evident with mouse movements.
I have a nvidia gt 710 and i initially thought that it could be the cause but i'm not sure:
Dortania opencore guide recommend to enable "Above 4G Decoding". If i enable above 4g decoding (removing npci=0x2000 from boot-args) the lag is visible and sleep/wake works. If i disable above 4g decoding (adding npci=0x2000 from boot-args) the lag disappear but sleep/wake doesn't work anymore.

Does anyone experienced something similar?

Sorry for my bad english

 

[pampas]

Hi!! I have the same situation here.. Did you fix it??

Thanks

 

[ejdyksen]

Also having a similar problem with my X570 board. The cursor jumps occasionally when moving

Try disabling SMCAMDProcessor and AMDRyzenCPUPowerManagement kexts and see if that helps. It seems to have worked for me...

 

[pampas]

I will take a look... thanks for your answer

 

[Aluveitie]

Catalina runs very smooth but I have the same mouse cursor lags under Big Sur, disabling low power state from the automatic speed adjustment helped there.