Re. FPS: yes, I observe the missing FPS counter
chez moi too. It misses in the non-FBO mode when a non-transparent texture is bound to texture unit 0, but it is seen in all other cases. It must be my glitch with glEnable(GL_BLEND) somewhere. I'll fix it a.s.a.p.
Re. Canyon: no Patrice, your display is far too jerky even with everything off and in a windowed mode. When in a
non-FBO mode and full screen, my display is much much smoother, almost like a video, and runs at ca. 50% GPU usage and 60FPS.
Can you allow me to attach a 365MB video (w/o recompression to 30 FPS) here for you to see what I'm seeing?