I have my MIDI Controller Roland A800 Pro attached to my DAW PC [i7, 16 GB, 1+1+2 TB] running SO4.
I have loaded Presence XT, Mai Tai, Kontakt 5 on different tracks.
Presence XT in resulting Latency while recording to an extent that it is difficult. So I am selecting some other VSTi to record and later change the output to Presence XT. I didn't measure the latency in ms but it is more or less 1/8 on 120 bpm.