I have used Baikal for caldav for the server, with davx5 on Android. Was solid. Moved to NC for files, so went ahead with calendar sync on NC too. NC calendar sync has already worked well for me, no hiccups.
The only issue I’ve had with NC is auto upload of photos from my phone. It constantly has conflicts. Otherwise sync of regular files works great.
I have used Baikal for caldav for the server, with davx5 on Android. Was solid. Moved to NC for files, so went ahead with calendar sync on NC too. NC calendar sync has already worked well for me, no hiccups.
The only issue I’ve had with NC is auto upload of photos from my phone. It constantly has conflicts. Otherwise sync of regular files works great.