Ha! Yep! I’ve been fooling around with it for a while and its really good, imo. I set the framdelay to 1 and the apparent (subjective mind you) input lag is very low, especially in combination with 1000hz setting on my stick. Been testing with a lot of very input lag sensitive stuff like super turbo and many shmups.
Its great, too, because unlike shmupmame, you can access the entire mame library. The ati support is much better than its nvidia support, right now, but I know its nvidia support is being worked on.