When attempting to use jamorigins MIDI conversion software along with any kind of software wynthesizer, you and your pc must overcome TWO rather differently programmed - and typically cpu/resource taxing softwares.
That's got to take more time.
Perhaps jamorigins for the MIDI conversion, firing a hardware MIDI synth for the purpose of recording the MIDI guitar, taking advantage of the hardware synth's near-zero latency and the fact that it does not use cpu cycles, etc. would be appropriate.
After the Recording to MIDI is done, one could than apply Software MIDI synth/sampler at playback to achieve desired lush sounds.
Even with my good old GK pup/GR-20 setup, I know that I can't expect to simply play the guitar and get the kind of response one would "normally" achieve when just playing the guitar "like a guitar should be played" so I don't go there. Hammer-ons, Pulloffs, Slurs, that kind of playing doesn't lend itself to getting tracked very well with a lot of MIDI guitar solutions IME. Well, I recall one Yamaha made setup that was pretty awesome along those lines, trouble was that it would have cost about two thousand dollars to go that route.
--Mac