We have a game that does a lot of gl calls (about 10k per frame, not all draw calls of course). When we try to us the Code XL record feature, it seems to record ok, but then CodeXL hangs when trying to display the recorded history in HTML. It seems to get about 2% through processing the textures then becomes unresponsive. We'd be happy to send a build of the game for you to reproduce the problem, but it's rather large.
Version 1.3.4905.0