I technically have two "cloud" drives. One using Google Drive, and one using File Share to a TeraStation but of course is using a cache drive created by Stablebit Cloud Drive. Both cloud drives use their own hard drive to store cache data. What was happening is when Google Drive had its cache drive filled up, it stated it was throttling that drive. Terastation was showing plenty of Cache space, Cloud Drive app did not state it was throttling it. However, I noticed the write speeds did resemble throttled speeds when I saw writing actions to the terastation in Stablebit Drive Pool performance section.
I'm curious if maybe this is by design? Writes to cache drives that have a disk full throttle all of them?
Side note: my cache drive has emptied a little and balancing has gotten more organized. Not much of a problem now.
Above all, thank you so much for reaching out Chris. Again, feel free to ask any question or if you wish me to provide more details. I'll even allow remote access to review.