yes it is true that is has a few glitches with cps1&2 (after playing a cps2 game and then a cps1, the speed won't be right) but also it has been reported some bad glitches with neogeo as well but you must understand, it just got its feet wet in neogeo so its a work in progress the best part of it all that its open source unlike kawa-x (sorry to say) but its nothing like making a simple driver using notepad (as badly i wish it was), xdk is needed and if you're handy with it be sure to give it a shot