will there is some progress

Also I have notice if you go in to the Sequence Setting menu,
the editing Mode seem to default to "Red Cinema"
and preview file format to MPEG-I Frame.
So I change these setting
Editing Mode: Custom
Video preview file format to Quick Time
Codec: apple ProRes 4444
check off max. bit depth,max render quality.
it seem to speed up the time line, with Open CL gpu acceleration enabled.
image looks cleaner too, so I just wonder if it has something to do with it

Edit : Just tried the Send to Speed Grade from Premiere ,
Works very well but the biggest think it the image look amazing !
What ever Premiere Pro is doing it seem not to be affected in Speed Grade .
There again are you getting the full 16bits ? I think maybe we are , will have to
Do more tests. Speed Grade Version CC 7.2x34