Hello Max,
thank you for that great work. - your speed is incredible.
As mentioned, I am working on a pushFrame-function. Here is my first working code with some reworked nodes to test it. Please let me know if you want to improve and integrate it, or we should use an external way.
In a short test I can't run the circle-node?
By the way I made another cursor. The original crosshair has in my opinion not enough contrast. It is a simple PNG which can changed with a simple graphic prog. Activation for those who also need more contrast: open litegraph.css in the css directory and change cursor: crosshair; to cursor: url(./crosscursor.png) 16 16, crosshair; put the crosscursor.png in the same directory.

Have a nice day
Karsten