Intel Graphics On Ubuntu: GNOME vs. KDE vs. Xfce vs. Unity vs. LXDE
Unigine Superposition when running in windowed mode saw no real change in performance but when running the same test full-screen, the GNOME Shell Wayland performance dropped.
But in the case of Unigine Valley, both the windowed and full-screen was significantly lower when running GNOME Shell on Wayland.
The Xonotic performance really didn't change much across the tested environments on Ubuntu 18.04.