Cpu usage goes very high (glitchy) when the gui is open and playing back, once closed play back is normal (cpu drops). Must be a programing issue to do with the graphics of vital. I don’t have this problem with any other synth or plugin. Running Windows 10 Studio One Pro latest version.
I am coming across a similar issue, it seems to be exascerbated when creating complex sounds and playing more than three notes together for more than a couple of seconds. However I am running vital on a bog standard computer with 4 GB RAM and without the benefit of a dedicated GPU so will be retesting again once I get a more powerful rig set up in a few days time.