Yeah I tested and verified that it was r6288 that caused it, maybe it broke rodolfo's hybrid method for EFB to Ram I don't know. :/
Billiard, are you aware yet that your commit, revision 6288 caused slowdowns and some other bugs? For some games the slowdown is bad, like -20 FPS to -30 FPS, if you can it would be nice if you can look into it and correct it soon.