UNIRD12B- Lee's system specs (taken from his sig) :Windows 7 Ultimate 64-bit, Intel Core i7 920 (PASSMARK:5008), NVIDIA Geforce 9600 GT GPU (PASSMARK:752) , 6GB RAM. If it doesn't run well on his machine, I don't think it gets released. He has a horrible video card! I didn't look at my metrics when I played "The Escape", but it ran great on my laptop. Haven't tried it on my desktop, but both of my machines are fairly robust. (specs in signature). Maybe you could email Lee and find out what's slowing you down exactly.
EDIT: Just played a minute of it again, was getting 50-54 fps. BTW, Reloaded is only using one core.
MAME Cab PC: i7 4770@3.4Ghz (passmark 9945), 12GB RAM, Win 8.1/64, GeForce GTX645 (passmark 1898); Shiny new laptop: i7 4800MQ@2.7Ghz (passmark 8586), 16GB RAM, Win 8.1/64, GeForce GTX870M (passmark 3598); Old laptop: i5@2.3Ghz, 8GB RAM, Win 7/64, Intel 3000 graphics