Running on both my ASUS TF101 and my VZW Galaxy Nexus, the newly released backup capability from Titanium Backup Pro to Google Drive (v 5.1.0), the sync operation saves files time and date stamped with the actual transfer time, instead of the last modified time that the file was originated or most recently updated in the Android device.
On subsequent syncs, the app is unable to match the file date and times properly, and backs up everything again, rather than just the files that were modified after the previous sync. Consequently, it builds up redundant files in Google Drive, and takes an inordinate time to complete syncs. Using the Dropbox alternative sync operation from TBP doesn't have the problem.
I submitted a support ticket with Titanium, and I hope they fix it quickly, but this is just an FYI that until it's resolved, you can inadvertently build up some huge files in Google Drive using TBP sync.
On subsequent syncs, the app is unable to match the file date and times properly, and backs up everything again, rather than just the files that were modified after the previous sync. Consequently, it builds up redundant files in Google Drive, and takes an inordinate time to complete syncs. Using the Dropbox alternative sync operation from TBP doesn't have the problem.
I submitted a support ticket with Titanium, and I hope they fix it quickly, but this is just an FYI that until it's resolved, you can inadvertently build up some huge files in Google Drive using TBP sync.