2014.2 Crash by scrubbing - serious memory leak? (screenshot attached)

Question

Hello. I've bought one year premiere pro cc plan. After upgrate from 2014.1 to 2014.2 I suffer with many crashes a day. I can't roll back, because I am in the middle of the feature film edit and new files are not opened by 2014.1
The most anoying crash is about memory use growth.
First - my system and sequence specs:
I have 48gb ram, intel i73930k processor, 4TB main drive and 3x250SSD drives for scratch disks. My Gpu is 2 x nvidia gtx 780 (3gb ram each). I work in 4k workspace and with uhd timeline 2.35 : 1 ratio. (3840x1628)
Second - how to crash.
I open the pproj file (about 8mbytes in size). It is a full feature film, i edit it in 3 parts for better performance. My main codec is cineform, both for HD previews and final 4K encoding.
Then I move playhead over any clip  already rendered with preview (HD - mpeg or cineform).
Then I hold left mouse button and I start to scrub playhead left/right randomly along timeline, the problem unfolds: ram usage starts to go up, after some time of scrubbing it hits the ceiling and premiere crashes (along with eventual other apps opened as firefox).
It seems like premiere is registering every displayed frame in memory, even if it is already rendered as preview. And there is no limit set for doing this, so it overflows and crash.
As you see on the picture, in preferences there is 8GB reserved for other apps, and optimization for memory set.
Scrubbing over non-rendered clips makes ram eating even worse, crash occurs earlier.
I wonder - do you people have this similar problem? Could someone reproduce this inside any larger project (30 minutes of standard movie edit).
I would like to find solution, because I cant allow for so many crashes during serious production workflow.
nl

Answer 1

I'm having the same problem too.
I've been posting my issues on another post entitled, "Just spent $7000. on new custom computer and PremiereProcc2014 crashing". (see my NEW profile computer specs as of two weeks ago)
I've been experiencing about 25 crashes in an 8 hour period. Some after 1/2 hour and others back to back crashes.
I didn't even think of why it was crashing until I called support, whereas they took over my computer and showed me that even when timeline is PAUSED, YES EVEN JUST PAUSED, we watched the RAM clime and clime to the ceiling until Premiere crashed.
It's so frigg'in frustrating that people here are complaining and there seem to be absolutely no talk about this issue. It's probably the cause of many Premiere issues, in my humble opinion.
Strangely enough, the tech fixed the problem (but this has been happening to me often and even with my older computer). Anyway he stopped several Adobe related running programs in the background, and took my timeline to a new project.
Basically, I'm not sure exactly what he did to solve the problem, and sadly I suspect it will return as it always has done so.
One strange note is that he reset all my preferences back to the defaults. I'm talking about maybe 15 presets that I have including a handful of changed key-strokes (to my liking), and simple things like "double-click opens in same folder" and "don't replay timeline after rendering" and "don't go to beginning of project after end of play-line" and changed around my user interphase to my liking.
These type of customization shouldn't cause Memory Leaks? I just don't get it.