UE5 Sequencer Rendering with missing Actors

I’m trying to migrate some long cinematic sequences from UE4 to UE5. It all looks good while playing the sequences In-Editor and PIE, but when I try to render the sequences with MRQ several (Sequencer) actors disappear on the render or get detached. It seems to fail randomly as if it was memory related but I don’t get any warnings on the output logs. Any ideas? It seems to work better if I place the shots one by one in a new master sequence created in UE5, but it still fails if I try to copy/paste the Shots tracks to the newly created sequence.