Sorry to revive a semi-old thread, but I'm hoping for some answers here.
I am also getting extremely bad framerates playing JA2...it is very frustrating because I love this game, and paid for it on GOG, and now it won't work well enough to even be remotely enjoyable on my only available computer to play it on.
Just like the original poster, I am also finding that it will take a bullet up to 5 seconds just to travel to the target. I haven't even gotten past the first encounter after landing in Omerta, because I can't stand sitting there and waiting for the enemy to be finished shooting at me.
It's not just in tactical mode either, so it has nothing to do with Merc lights. The main menu, laptop, map screen, everything is choppy and slow and the mouse jumps around.
I'm running the latest bugfix version of 1.13, and I'm on a brand new HP Envy M4, Windows 8, Intel i7 processor, Intel HD 4000 graphics.
Any suggestions are greatly appreciated, thanks guys.
BTW, I registered here just to post this