Sorry for the delayed response. Was away on business for a few days.
So, OK. Did what you said. Took a look at the storage folder and found a total of 94 ".db", ".db-shm" and ".db-wal" files. By far, the largest sized of the files are the ".db" of which there are a total of 32 which range in size from the smallest being 7 KB, to the largest of 1,495,679 KB. In total, all 32 sum to 4,075,371 KB.
Does this help? Give you any idea what's happening? Do I need to spend an average of $123 on each of the 4 computers I'm syncing to max-out their RAM at between 16 and 24 Gb to fix the problem? And, though a cost I didn't expect to incur, in your opinion, would this actually fix the problem? (Seems that Resilio Sync slows my one computer with 12 Gb RAM "the least", as compared w/ the other computers of between 2 and 6 Gb RAM. But, by "least" I mean that this one computer, with the most RAM, remains just usable, but very frustratingly slow, when the RAM is 94% full, as compared with the other computers that just grind to a halt.) So, not sure if adding more RAM is actually going to fix the problem. (FYI: No CPU issues on any of the computers. At idle w/ Resilio Sync running, CPU usage never goes higher than 10% on ANY of the synced computers.)
Finally, one last observation. I installed Resilio Sync in the regular way, NOT as a Windows service. However at times, when any one of the computers slows, I've noticed, from taking a look at the Performance Monitor, that in addition to Resilio Sync.exe using up lots of memory, Services.exe may also be using well over 1,000,000 KB. Then things really grind to a halt with 100% of the RAM in use! I NEVER observed this before installing Resilio Sync, and have made no other changes to my computer and/or installed any other programs. Any ideas?