We use different machines. The pictures you saw here are from my laptop, which is i5 5200U - 8GB RAM and intel graphics, running on Debian Buster. My desktop has i5 8500, 16GB RAM and nVidia GTX-1060, that runs Buster too. There I use mainly Davinci Resolve 
The weakest is an old computer with an E6700 and 4GB RAM. There runs Mint MATE well too.
Browsing the current web is more demanding than MATE or XFCE, so the bottleneck is not the DE. 
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