Hi Bruno,
I just tested your plugin with your demo project. I made a new map and place there 3000 actors with just one int variable in it. This variable gets an random number through a trigger box. I save the level to one slot and it takes max 2 seconds. Then i close the level play it again and load the former saved slot. But now it takes more than 30 sec to load and the game freezes during loading. Also the progressbar did not fill through the loading time. It seems that the load is not async. Did i something wrong?