Fresh instalation of Ubuntu 20.04 LTS on Dell Vostro 5590 with
Intel(R) Core(TM) i7-10510U CPU @ 1.80GHz
with integrated Intel UHD Graphics and dedicated NVidia GP108M [GeForce MX250]
Used Nvidia proprietary binary drivers + display Link drivers + updated XServer from displaylink
Fresh instalation of Ubuntu 20.04 LTS on Dell Vostro 5590 with
Intel(R) Core(TM) i7-10510U CPU @ 1.80GHz
with integrated Intel UHD Graphics and dedicated NVidia GP108M [GeForce MX250]
Used Nvidia proprietary binary drivers + display Link drivers + updated XServer from displaylink
https://www.displaylink.org/forum/showthread.php?t=67148
Still uses lot of CPU - gnome shell is visually slower than when only on internal display.