My father has a monstrous laptop (very wide monitor), a Sony VGN-AW11M. It's not bad but old. It has been using linux manjaro for years, but I reinstalled it a few times, because I was never sure on what's the best DE, in order to maximise performance but keep a good user experience. I thought about LXDE, LXQT, Mate and XFCE. I prefer Mate or XFCE but what do you feel, regarding the following characteristics:
- Intel core 2 duo P8400 @2.2
- Nvidia GeForce 9300M GS
- 4GB Ram
As for the rest, my father uses libreoffice, shotwell, firefox and nextcloud-client, mainly.