Hi Danny,
From what I’ve read it’s the D500’s and D700’s. It seems to have started after people upgraded to 10.9.3, including my self.
I’ve turned off preference syncing in premiere (That crashed my system as soon as I turned it on).
repaired permissions
Threw away my premiere preferences
Cleared my media cache in premiere preference pain.
Threw away ALL render files.
Turned off GPU Mercury play back.
and I have a 1080 timeline playing back at half res.
I work with R3D’s and 5d footage.
My system seems to be stable now. Slow, but stable, without glitches.