Program and source monitor goes black when adjusting Ultra Key

hello forum members,

 

i have nested sequence multicamera enabled on timeline.  keying green screen using "ultra key" effect.  after few minutes of adjusting key program monitor goes black.  if double click on edit, source monitor black also.  can scrub timeline in sequence and/or program monitor , hear audio no video displays @ all.  if "undo" edits , adjustments, no video displays in source monitor or program monitor.  way video display again restart adobe premiere.  started adjusting ultra key, video disappears.

 

here things have done in attempt remedy issue:

 

1.  cleared media cache

2.  reset preferences

3.  running "premiere pro cc 2015.3" updated "premiere pro cc 2017"

4.  checked update gpu there none though invidia offering "gaming driver"

 

none of above solved problem.

 

the following did yield partial solutions:

 

a.  under "project settings", "general", "video rendering , playback" select "mercury playback engine software only".  works defeats whole purpose of having cuda enabled gpu.

b.  use key effect.

c.  use "after effects"

 

i have seen issue in forums, blogs , videos dating july , before.  people have sent "bug fixes" adobe concerning this.  ultra key effect 1 of useful tools in premiere issue missed in pp cc 2017 update , update prior it.

 

does have complete solution issue having ultra key effect in adobe premiere pro cc 2015.3 or premiere pro cc 2017?

 

many can shed light upon issue.

 

jerald

 

tech specs:

 

intel core i7-6850k

64 gb ram

windows 10 pro 64-bit

nvidia geforce gtx 1080

nvme toshiba rd400 (os , programs)

samsung ssd 850 evo 500gb (source files)

sandisk ssd 512gb (media cache)

western digital black 2tb hd (render , storage)

hello jerald,

 

others having black screen/gpu issues well.

 

premiere pro cc 2017 - imac 27" 5k retina - gpu problems

 

problems updating cc 2017 project

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