To make it look better in game, turn off the dynamic shadows.
Read this post for more info.
And I highly recommend this mod for way better lighting in game.
You have to download both attachments below :)
The Early access attachment includes 1 folder:
The Room layout & Exclusive CC attachment includes 3 folders:
Please read the room installation instructions in the image above (also inside the ZIP folder) for more details how to place the room in your game.
Room details: