hello. I've been backing up my windows 10 laptop to an external hdd using the built in backup option (windows 7). however, each backup seems to take up a sizeable chunk of space. I actually ran out of space when my computer was backed up last night. I've tried fiddling with the options, but that seemed to have no effect. also, the size of the backup seems to be about twice the size of the space used on my internal hdd. I just deleted a 3ds sd card backup (almost 100GBs) from my desktop, since that was likely part of the previous backup, but the backup came out considerably larger. is this supposed to be like this? I find it odd that it would have a scheduling option if that's the case. should I use a third-party app instead? thanks!