So this seems to happen to those of use who have nvidia cards. And the people with AMDs dont seem to have the problem.
limkol, i dont think its an issue of outdated hardware. Balladeer has a GTX 970, thats a high end card capable of running most (all?) modern AAA games (fallout 4, mad max, gta 5, etc), it shouldnt even break a sweat running sh4.
Personally i have a GTX750ti, wich is "lower on the ladder" than a 970, and its still more than enough to run SH4. Even SH5 runs at over 60FPS.
Im betting that its either some "tweak" we need to do to our nvidia settings, or some incompatibility between the nvidia drivers and SH4. Lets hope its the former!