Intel Graphics On Ubuntu: GNOME vs. KDE vs. Xfce vs. Unity vs. LXDE
With Portal there was slight changes in frame-rate, but again nothing meaningful and the UHD Graphics 630 from this Core i5 Coffee Lake processor would still be easily playable with any tested desktop.
Serious Sam 3 BFE with both GNOME Shell Wayland and KDE Plasma 5 saw lower frame-rates than the four other tested configurations.
Tesseract's performance was within a few frames difference and hovering around the 60 FPS mark for the UHD Graphics 630.
The Tomb Raider performance was also within frames of each other.