I've been using JRiver now since MC18 without any issues and am now on MC23 (as of a few days ago). Up until this point, everything has been great until I bought a new Onkyo P-3000R preamplifier that has all the digital inputs and DAC built into it. They also use proprietary drivers for it from their website. Before that, I was using a Carver C-1 preamp with an inline USB DAC without this issue. Listening to music sounds fine...until....you scroll from the MC on the computer to find something else to listen to while one is playing. The music literally slows down and you hear all sorts of splotchy sounds that are hard to describe. But once you quit scrolling, it's back to normal.
Now, the really weird part is...it also does this when I'm using the Gizmo app to scroll through things on my Galaxy S7. The faster you scroll, the more it slows down and sounds awful...from either the PC or the phone controlling it. I've checked task manager and it does use more resources when you're doing this but it has never done this prior to just basically changing out a preamp and going to new drivers that are designed to work with the preamp. I've even tried another USB port to see if it's still there and it is.
So where do I go from here? My PC is a Dell 960 SFF Intel C2 Duo E8400 3.0GHz with 8gb memory and a 120gb SSD. The music is kept on a Synology DS216J (4TB RAID 1) tied in via 1gb connection. I can't think that the computer would all of a sudden be the cause of it when it worked fine before changing preamps. (no, I'm not going to return the preamp..ha) Well, other than the driver.
It would be one thing if it did it only on the PC and not the phone; but it does it on both. Anyone ever heard of this or had experience with it?