Now that it's been a few days since this post about the start of work on a test floor for BFNS Ultimate, I have some more progress to share.
First off, all of the doors and room chunks have been added to the test floor's layout, which you can see in the image below. Please note that due to it being a test floor, it has some placeholder assets for testing purposes, which is why all of the doors are the same redone classroom door design.

Next off, occlusion culling and the room manager system planned to be used in regular floors has been added to the test floor as well, and it properly hides rooms (aka areas) without any issues as the player is going through the test floor, which means it's working well. And the performance is great too. This aspect will probably be shown in a future development footage video of the test floor along with other tests being done in the WIP floor.
Also, regarding the redone doors that have been previously mentioned in progress updates, some improvements and fixes have been made to them since they were last mentioned.
First, the doors close more smoothly now without slowing down at the end of their closing animation which was especially noticeable when being closed slowly instead of quickly (as shown in the short dev look video below), and also, a bug where opening the door again right as it starts closing would cause it swing around to the other side and clip through nearby walls has been fixed as well, which is also shown in the video, which was taken on the WIP test floor.
Overall, it means when they arrive in the Beta 1 update, they should work even better than they did before.
Anyways, that's all I have to share for now, and it's coming along nicely.