I am syncing ~100MB of files from a large drive.
Insync has been filling up my home directory and ~/.config/Insync/live is now 3.4GB, with ~/.config/Insync/data being only 101MB.
How can I fix this?
@stefan1 My apologies! It would be ideal to let the sync finish first before deleting the live folder. Make sure that you’ve quit Insync before doing so. Let me know how that goes.
I’d also like to confirm-- when you mentioned that Insync has been filling up your home directory, is it syncing every file from the cloud? To check, see if all files and folders have a sync icon on the app UI.
So you’re saying I can just delete it as long as the app isn’t running?
No, it’s just filling it up by growing ~/.config/Insync/live endlessly. The rest of the sync works fine (100MB of files are selected, and those - and just those - are replicated just fine).
No issues other than it using excessive amounts of space.
I’ve forwarded this to our engineer to ensure that things continue running smoothly when you delete the live folder. 
I’ll update you as soon as I receive their advice!
Mia