TI produces full-backups inspite settings

Hi,

TI is backing my most important files&folders from my laptop to my NAS within LAN. I opted for "after full-backup only incremental backups". Unfortunately, TI regularly makes full-backups after a couple of incremental backups.

This is really annoying since my NAS is synced with my remote server. A full-backup is about 16 GB in size which takes a while to upload and clocks bandwidth (which isn't great in the first place).

I have been trying to solve this problem for many versions but it is always occurring. I tried backing up my entire data partition in the beginning, switched to files&folders later but to no avail.

Does anybody have a solution?

regards,
SB