Fixed some issues of things which changed in Godot 4 and I also tried replicating this issue #599 but I guess that is not longer an issue in Godot 4.0? Tested and fixed everything on Godot 4.0alpha5.
Small fix
This demo showcases how to use low-level Servers to achieve better
CPU performance when drawing large amounts of objects.
The code has been updated for Godot 3.2, cleaned up and has received
additional comments.