Using MAC OS X El Capitan
Running VWX 2014 - SP5
Graphics card- AMD Radeon R9 M395X 4096 MB
All drawings / in all layers / in all views / in all render modes - disappear when not scrolling or moving in fly-over tool.
yes, classes are visible / layers are visible / etc. etc.
Drawing is there.
plainly visible while zooming.
disappears as soon as "movement" stops.