Thanks for playing and glad you enjoyed the game!
Also thanks for your extensive feedback and interest behind the game. It was surely a challenge and glad you gave us some other points to think of!
And you are right, optimizing is a hard task. Especially for optimizing 3D Godot Games the Resources there are rare resources available. For optimizing the 3D assets as example I had to look what other asset pipelines for other engines do and tried to mimic it for Godot.
I was actually surprised seeing so many 3D Models being able to move around at the same time. I had expected that we suffer much faster and harder performance issues. The unit gap Definity would have saved some issues. On the other hand you got a new 3D Benchmark tool with this. But after all this also shows that you can do such things with Godot although not perfect and more Performance Optimizations have to be done.