I am experiencing this same jitter and cutout issue as well. Searching the forum I found this post.
I am not using noteperformer however; the problem exists with the HSSE+HSO Pro or HSSE(elements) templates. It doesn’t matter.
I also see it regardless of driver or soundcard. Using the soundboard in my PC (realtek I think) I see it with the generic IO driver with the latency at maximum, or with the ASIO4ALL driver. I also see the problem using a Presonus studio 24 USB interface with either presonus’s driver or the ASIO4ALL driver. It is always the same. A score of about 20 instruments will sputter/dropout/crackle when there is an entrance of alot of instruments during a quick tempo. If I select only a subset of the instruments, it plays fine; but as soon as I go back to the whole score, the stuttering begins again. I’ve noticed I can exasperate the problem by increasing the metronome rate, but there is so much randomness to this.
It seems to be a “note-density” issue (alot of instruments entering with different rhythms). I never see the problem during solos or light passages, but once the problem occurs, it continues to occur in that same passage. I usually close dorico and reopen it at this point.
Watching the taskmanager, I do not see excessive CPU usage, but the VST engine does consume the most memory and utility. The dorico process very regularly reports “not responding”, even with what appears light CPU and Diskdrive activity. There is nothing running on the machine other than Dorico (no backups, downloads, no virus scanning, no browser, no solitaire game in the background ; I am watching the taskmanager constantly
When dorico first opens, If I immediately hit playback, I get nothing for about 30 seconds. Then alot of audible garbage. Seems the VST process is still loading when dorico opens.
Switching from Write to Play mode takes about 10 seconds to process. Play to write mode is fast.
There are times when no amount of IO buffering will work
Output WAV files are always generated without stuttering.
I am using a i5-4460 processor with 16GB of ram. I never exceed 6GB.
Is this not an adequate system for a 100 measure score of approx 20 instruments ?