Presumably you don't have any Part Markers on the 5th, 9th, 13th etc bars?

No part marker -- 5 minutes ago I just opened a new song and did not change anything except selecting the RealDrums.


The tracks are not frozen?

Nothing is frozen here...


Desktop; i7-2600k, 8 GB mem., Win 10 Pro, BIAB 2017; RB 2017 - latest build
Laptop: i5-2410M, 4 GB mem, Win 10 Pro, BIAB 2017; RB 2017 - latest build