PCG generation Ok in editor but doesn't show in play

As an extention of Forest by PCG, does not show in play in editer - Development / Rendering - Epic Developer Community Forums - now closed…

The problem is - again - occurring. I have set some parameters much higher to prevent the error messages I had and it seemed to work. But it happens again. No changes.

At the moment I have 12 PCG’s that create a forest within a spline. Same PCG for all. Some small area’s, some (very) large potion of the landscape.

I’ve done some experiments with the settings; the level is set up as world partition (which has issues by itself now) but the PCG’s have not been set up as ‘partitioned’ . If I set this to true and have my PCG’s generated, Unreal crashes at some point. If not, all PCG’s can be generated and will show - in the editor. But when I start to play in the editor, all disappear. Even if I set generation on runtime, they are not generated, at all. No error message on screen or output log.

There is a second place where ‘partioning’ is set - true by default, it seems. Set this to false - makes no difference: Show in editor, not in play.

In another (much smaller) level there is not this problem, the PCG stays intact but now all collision is gone, although all assets have it set to complex as simple, and blocking all.

This is the first project I have this problem. It seems to be a 5.5 issue, I didn’t have it in 5.4 (as far as I can remember)

any ideas where to look?