Same for me, XFCE is light, stable and efficient. I believe that's the reason it's chosen for Debian as default DE

Agree to that, especially for video cards and Wi-Fi. These two can be hard to deal with… If your laptop is Wi-Fi only and you don’t have a USB/Ethernet adaptor you may not be able to connect to the net at all

Yes, agree with you, especially your last comment: disable entirely IPv6