Large amount of actors

Hello,

I’m very excited to start using this engine. I want to use it in an analytics project to run an event based model (we like the blueprint to build it).
This would require a lot of objects that listen to events. While I was playing around with it and copying 3000 chairs (from the models you provided) I noticed that it will run very nice on my PC i7 ; GTX 780 ; 16 GB (120 FPS) on Epic.

However I was planning to copy/duplicate a lot more of them 10.000 / 20.000 to see how it would handle this.
But this copying takes takes minutes or more in the editor. The cpu stays at 13 % or less.

I will try to do it in BP or C++ also; however could you tell me if there is some kind of limit in the amount of actors to handle in the editor.

Thanks for your help

What is the limit?