Actually your re-using the cache data might be the problem as might be MP rendering. Turn off the respective option on the render settings and/ or turn off the disk caches globally in the prefs and also turn off MP rendering. Apparently checking cache integrity and/or retrieving files slows down things considerably on your system - for whatever reason. Could be poor disk performance, could be something with having added your unsupported card to the file, could be your virus scanner getting hyperactive as more cache and temp files are produced, also impairing disk performance...
What is your setting for the "Reduce Cache Size When System Is Low On Memory" preference in the Memory & Multiprocessing category?
Pretty sure it's not the gfx card settings as the problem occurred before I implemented this change.
Pretty sure it's not the MP rendering as things were far slower without this enabled.
I've disabled the virus scanner and disk cache and the result is the same, a slowdown in susequent file rendering times as I progress through the render queue.
I've currently got the "Reduce Cache Size When System Is Low On Memory" feature enabled.
But I believe I checked it in the hope that it might resolve the issues I was having...
I ran some tests with and without and the results were the same.
(Virus checker still disabled and disk cache was enabled)
The problem still occurs.
I'm still having issues with this, do you have any further recommendations?
Sometimes, but only sometimes, If I purge all memory in between a render the second render is as fast as the first, but this is very rare.
I'm going to try out a few other RAM modules as I suppose there could be an issue with my hardware, but any other suggestions would be greatly recieved as we are running out of ideas.
I see a lot of these posts that are just given up on. Where is the proper place to go for help if these posts are just abondoned without a resolution?
I have the same problem. Mine is with a Cr2 image sequence (over 4000 raw photos). Render slows to a crawl. I have disabled and enabled everything possible. Tried quicktime and tiff sequence. Same thing.
Renders just fine in CS6.
128 gb ram
4 gtx 680
8 drive raid array (raid 5)
I am also having exactly this problem, and it stared when I upgraded the OS to Mavericks. Tech support said they would research this and get back to me, and I've yet to heard back from them.