Hi,
I noticed some strange behaviour and was able to figure out the source.
what happened: while scrolling through a patch, i noticed the framerate would sometimes drop to exactly half, while gpu load doubled, for no aparent reason. this behaviour was directly linked to the visible portion of my patch.
reason: an open (alt+2) render window that is NOT within the visible part of the patch. framerate drops as soon as the renderer is outside of what i see, and recovers when i scroll back.
occurs with any alt+2 tabbed render window, even when it doesn’t show any content. tested with v. 30, 31 and 31.2; tested with an empty patch as well, but only on my machine (nvidia gtx280). only occurs for renderer in-patch (alt+2), not for hidden ‘free’(alt+1) render windows.
is this a bug or a feature? i mean i know i’m not supposed to leave my unused renderers open, but double gpu load just seems ridiculus for this case.