might embedding a jme canvas into an alternate gui such as the netbeans or swing ones increase input delay?
Not really, but it will definitely increase render delay which might look like increasing input delay.
In practice, if everything is done right then it shouldn’t really be noticable for editors and things (the only real use-case for embedded canvas).
If you’re curious I have an old prototype app that uses JME embedded in Swing:
thank you!