I've found a way to mitigate the low FPS on the M8 Kawasaki. This is a scripting issue after all, not the model as they try to tell us (to justify the delay).
This "fix" makes the Update() script run 3 times per second instead of 20+ increasing the FPS from below 15 to 30-40 on my machine.
It is incompatible with my TrainSim Helper at the moment. I'll release another version for it soon.
Be wary though, I don't know all the implications of this workaround. It might break the loco at some point although I think you should be fine. I have not tried to finish the scenarios with it yet.
http://vega.livecd.pl/~havner/ts/m8-fps-fix.zip
Tell me please if it works for you.
