re: port-arm/56596: Pinebook Pro graphics noticeably slower since DRM update

[matthew green <mrg%eterna.com.au@localhost>]

i thought this problem was resolved by the vblank fixes, but while
it works OK for me, firefox is slow to redraw and mpv drops the
vast majority of a 720p video, where-as it used to work OK.

so while the vblank fixes *did* help a lot, there is still a large
regression in performance.


.mrg.