I can confirm a glmark2 of ~250 (720 & 1080P) 
as expected from berryboot-image.
glxgears runs with ~30 fps as seen before.
Could not easily change resolution to 1080P, neither with uEnv.txt nor there is a working image for 1080P for bpi-bootsel.
Instead same procedure as it is every year: build bsp from github and patch...
(headphone sound issue also still there)