sounds like between you the approach is about as scientific as we’ve had! :) i think you’re doing a great job and it’d be awesome to get some numbers on all these different eventualities as it would perhaps give me an excuse as to why i don’t seem to be able to get past about world 6 in super mario bros :)

the dispmanx stuff is interesting but it’s a bit of a niche driver that definitely has some issues in retroarch, but perhaps they’ll be more likely to be fixed (or the other drivers improved) if it’s proven to have the least latency.