Posted by Demoscene Passivist on Jul 14, 2010; 4:41pm
URL: https://forum.jogamp.org/Texture-rendering-performance-problems-tp966089p967016.html

I guess ur GLJPanel is NOT using hardware acceleration and has probably fallen back to software implementation of opengl under windows. I had a similar issue under vista when I started with JOGL.

Try using GLCanvas instead of GLJPanel and see if the problem still remains. Also try if u have hardware accelerated OpenGL in general using e.g. "GPU Caps Viewer".