I thought I would post this element from here (see spoiler link) because I think it would be helpful to PC users with stability issues!
"the game is rendering things at some astronomically long distance or extremely close if not negative distances, which is causing the resource usage to skyrocket, and hence causing crashes, stuttering, and poor performance, lock ups, freezes, etc., regardless of what people have thier settings at.
It is being investigated, from what I have been told.
The game is currently misallocating the system resources, cpu, gpu, ram, pagefile and vram. this is due to bugs in the coding for Speed Tree, and draw distances. this is what is causing high usage spikes across all (random access and temporary) storage and processing media, which in turn causes the stuttering, lags, crashes, etc
I have tried both Nvidia, and AMD graphics cards, and I am most stable with AMD using the Mantle API."
Following many freezes and TDRs after patch2+hotfix or Botch2+Hotbrix as I like to call it - this is where I'm at personally;
I ran a series of tests with OCS on my gfx cards which passed without producing artefacts at 1920x1200 res and then ran it again at 2560x1600 which failed with a TDR. I then ran 3Dmark11 on performance which failed to complete with a TDR.
Using DDU - you can find info here if you don't know what it is - you can completely uninstall either nVidia or AMD drivers completely, including any related company install folders. The utilities that are provided by nVidia etc for this task eg clean install, do not work properly!
- I removed all my existing 344.75 drivers with this method and re-installed 344.75.
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- I then ran a the GPU stress tests on my 4GB GTX670 SLi cards using OCS and then 3Dmark11
Both cards performed flawlessly and I got a performance 3Dmark11 of 14633 and Xtreme of X5738. These actions proved that somehow my drivers were corrupted at some point, whereas before installing DA:I I had no such issues. To test further I ran 3Dmark11 at 2560x1600 at maximum settings allowed and both cards performed flawlessly without issue.
I then started DA:I and loaded a save at Haven which had brought about my crashing before. I ran around the top part of the camp (where Leliana is) once, still with lots of stuttering and obvious draw distance issues that people have reported since Botch2. I couldn't complete a second circuit of the camp as the game CTD with no error messages!
nVidia have just released a new driver Version 347.09 beta; listed in the release notes as Open Issues
Windows Vista/Windows 7 64-bit Issues
Single GPU Issues
Dragon Age Inquisition runs poorly (stutters) on NVIDIA hardware.
nVidia clearly acknowledge now that DAI is a problem even if BioNotAware haven't!
However nVidia can add SLi to that open list too!