What are your Sequence settings in Premiere when this happens for all Sequences? Do you have the AE Comp linked?
Sequence setting Redcinema 1080.
No AE Comp linked.
Does the issue continue if you switch to Software MPE mode under Project settings/General? Make sure you delete the previews when you switch modes.
The solution we found was updating the Nvdia 4000 Card Control panel and the Driver and It helped.
Quadrotesla windows 7 Vers. 20097.3
Nvdia Quadro Transmit plug-in for CS6 to work with the mercury..
Now when we stop playback or stop scrubbing in the sequence the RAM will go down and will not keep on going up
Using the internal SATA disk was not the problem it always played smooth it only did problems when the memory when up to the maximun!