DTTG File Provider has problems with many files

I noticed that accessing folders within DTTG over the File Provider with the Files app, leads to some sort of crash, when there are many files in a folder.
I am not sure where the problems begin, but they seem be there from about 500 files in a folder.

I am not sure, if this is something, that needs to be fixed in DTTG, or if this is a iOS problem.
Anyway, it is very disturbing and annoying.

Which versions of DTTG and iOS are you on? The iOS Files app seems to have had a lot of bugs, and I’m not sure whether the most recent version of iOS has fixed things.

Always the latest regular versions.
That is, not the beta 12 but iOS 11.4 and the latest DTTG