Poor performance

[tomeye]

I have a Lenovo T480 with following specs:
i7-8650U
32GB Ram
500GB SSD
Intel UHD 620
Nvidia MX150

this is connected to a Lenovo ThinkPad USB-C Dock Gen 2 station.
Windows is 20H2 and I am facing very poor performance during meetings with video or watching videos. During bad performance I see high CPU and GPU usage, if I use only the laptop without docking station it performs great, as expected.
I think this is caused from the Intel adapter, any help?

[AlbanRampon]

Hello,

Could you confirm that you are using the Lenovo ThinkPad USB-C Dock Gen 2 as pictured in the following Lenovo website?
https://support.lenovo.com/ca/en/solutions/acc500106-thinkpad-usb-c-dock-gen-2-overview-and-service-parts

Best regards,
Alban

[tomeye]

According to s/n I have the ThinkPad Hybrid USB-C with USB-A Dock - Type 40AF

https://pcsupport.lenovo.com/us/en/products/accessory/docks/thinkpad-hybrid-usb-c-with-usb-a-dock/40af/40af0135eu/zhk0ftyz/downloads/driver-list

So it is not the one you shared, I can see that mine has two displayports while the one you shared has one.