https://forums.autodesk.com/t5/3ds-max-forum/max-2016-groups-cause-viewport-slowdown/m-p/5608406#M88735 <P>Don't put too much trust into the built in FPS display. It's lying. Another thing: turn off all other statistics display ( vertx/poly/edge counts ) as they tend to hurt playback performance, at least if some complex modifiers are involved.</P><P>Regarding the group slowdown thing:</P><P>&nbsp;</P><P>Indeed there's something happening:</P><P>testscene here drops from 24fps down to 14 fps, as&nbsp; soon the teapots are grouped ( 3650 noninstanced teapots). Don't know whats going on, but some optimization seems to break when objects are grouped ..</P> Sun, 26 Apr 2015 05:36:05 GMT spacefrog_ 2015-04-26T05:36:05Z