engine replication broken

Guys i have a serious problem…
My Networking doesn’t work like it should i think…
I can’t add a simple component(empty but replicated) to a replicated actor
it Disconnects all clients from server with

Also i tested it in 4.19.4 and in 4.20. I can’t add a simple replicated component… How can i fix something like that ?

I have no idea how to fix it… is it even a problem with the engine?
Help pls

EDIT: that is the main problem for me

I would re-think your approach. A 27K element array (even if it’s just Integers) is ~100K. However if you start adding in just 10 players, each with that field, you’re suddenly up to 1MB just for that one field.