Some (possibly) New Ideas for RPCS3

Yeah, multiple things are slow, it was just when I was profiling the memory reads were pretty much obscuring any other slow instructions, it was spending 80-95% of its time in the loop from "isMyMemory" or whatever it's called but I don't even remember whether that was release or debug where I pulled that profiling info from (but if I remember right these reads were also triggered per CPU instruction read).

I got the same when profiling in release mode -- and yeah, every memory block read/write uses IsMyMemory/IsInRange etc. They are triggered per instruction decode.