Here is my possible answer to @Konradzio question and my plea to MS:

Perhaps Microsoft had a lot of complaints in W8/8.1 from people seeing a lot of local drive usage without understanding why....

Konradzio: you explained my original problem perfectly, thank you. At last this thread comes alive :)
Perhaps you also gave a solution without realizing? As Mooly suggested: perhaps the xml file you...

In File History > Advanced settings of W8 and W8.1, there was an option to adjust the offline cache size (default 5%). In W10 this option is gone! So I have two questions:

1. Is the default still...