Happens on both ends. Each box has 24GB ram. On average, BTSync.exe consumes 900,000 K memory. Total memory use is always under 35%, CPU under 25%. Yes, sync.log works just fine, but the debug.txt never shows any errors. To test, I blocked BTSync in Windows Firewall. That added entries to debug.txt, but the "folders loading takes a lot of time" issue never shows any errors. It's just slow.