DrawGratings dependency on UpdateFrame can cause 'missed' render frames #37
Description
Spotted that when switching observables that contain draw gratings, often there are blank frames in between initialisation. This can happen if e.g. a Timer aborts the observable and seems to interrupt the rendering of the grating.
In discussion with @glopesdev - noticed that this is specific to DrawGratings and that it is caused by DrawGratings dependence on UpdateFrame internally, that means WithLatestFrom is dependent on an update step.