Hi,
Aout the latency problem in FL Studio. I use the Virus TI template posted in this forum (the one where there´s a preset delay set to all mixer channels in the FL Studio mixer).
Now to improve the latency I use Part 1 as my preview part in Virus Control. To do this I routed it to Out 1 L+R instead of USB1 L+R. This way Part 1 is NOT routed back to the FL Studio mixer but straight out to the Virus output port 1. This way it is possile to play your midi keyboard without any substantial lateny. Whenever I´m ready browsing and playing patches this way and I want to use it in my song I drag the patch from Part 1 to wichever Part I want it to. Works fine for me.
Cheers
Martin