I understand there is some good technical reasoning behind this decision, but it is a surprising limitation. I made sure to get a graphics card with enough GPU RAM to cover very large resolution renders. But I'm hitting the AVP resolution ceiling before the GPU RAM ceiling. (Using half available GPU RAM: render stats for 8192x4096
/ GeForce GTX 770 4GB)
At this time I'm only losing 50 to 100px of resolution, so it doesn't affect me much. It was just something I wanted to note. But I imagine in the future the 360 video camera systems are only going to increase in output size.
Perhaps adding it as a checkbox in the settings dialogue, and included a warning that suggests the minimum video card RAM requirements. But I understand that this could be a complex issue than isn't that simple to address.
Charles Hayden Planetariumhttp://www.thefulldomeblog.com