Posted by Matteo Battaglio on Jul 15, 2010; 8:29am
URL: https://forum.jogamp.org/Texture-rendering-performance-problems-tp966089p968927.html

I tried with GLCanvas and... it works!
The CPU is 0% and the framerate doesn't drop even at fullscreen.

So the problem seems to be related to GLJPanel: I hope this is a bug, because the performance difference in my opinion is too high to be justified by the differencies between awt and swing...