If you are interested in a Windows Update transition from a Windows 10 SuperFetch version to a SysMain version, read on.
On my prototype Hauptwerk system with a quad core i7-4771 and 32GB of memory, I have been running Windows 10 Pro Version 1709 with Superfetch disabled for more than a year. Periodically, I have executed Windows Updates to receive the intervening patches on top of Version 1709. With my largest sample set loaded, I have more than 6GB of memory free. Since I also use this PC for non-Hauptwerk software, it is always connected to the Internet.
Yesterday, Windows kindly announced that Version 1709 for Pro had reached End of Service. This can be verified by looking at:
https://docs.microsoft.com/en-us/windows/release-information/.
Also during the past several weeks, I have noticed the audio output at times has had periodic clicking sounds and very short audio drops (roughly every 5-10 seconds). This has occurred even while playing a single rank on a manual and the Hauptwerk meter never leaving the green zone. This has some similarities to what several folks have previously reported many times.
I decided to update to the latest Version in the Semi-Annual Channel: Windows 10 Pro Version 1903, which first became available on May 21, 2019. The update process was successful, but lasted long enough (most of an hour to possibly more than an hour) that I didn't watch or time it.
Others have mentioned that in new Windows 10 Versions, Superfetch has been replaced by SysMain. I thought when updating from a "Superfetch" version to a "SysMain" version, there might be the possibility that the Disabled Superfetch setting might be carried over to SysMain's setting.
After my update, I checked Version 1903 and SysMain was Enabled.
I had to manually disable SysMain using instructions Ed previously posted -
https://www.techosaurusrex.com/windows-10-sysmain-causing-high-disk-or-high-cpu-usage-heres-how-to-disable-it/After SysMain was disabled, in more than an hour's worth of playing registrations from a single rank to Tutti on a 7+GB sample set, I have not encountered any periodic clicking sounds or audio drops. For me, this single setting change appears to have eliminated my Hauptwerk audio interruptions on what I would consider a fairly lightly loaded PC system.
Mark