I tried it on my perfectly good working system, just to test if it makes a difference. I got exactly the same performance, makes me wonder if all this GPU rendering is actually worth the effort.
Good question;)
I spoke too soon. On my latest project I’m getting my usual crash on exit…
Sorry to hear that…
BooYAH!!! I’ve been plagued with the crash on exits and other related symptoms for months. Even opened a ticket with support and had temporary intermittent resolve for the problem after the recommended upgrade to 8.0.20 Build 468
In my case, support had diagnosed the issue to be with some third party plug-ins after reviewing my crash dump logs, which was very likely I suppose.
But after stumbling across this post and applying the fix (running Mac) my woes are over. So great to exit without a brutal crash afterwards. Seems to be a bit more responsive as well now.
Thanks ggc!!!
Tried this fix and it has speeded up a lot of things like the opening of Ozone 6 that used to take ages. Only downside is that when exporting audio I now do not get a percentage bar moving - it works but stays at 0%
I haven’t used this method the stop crashy VSTs but I sometimes experience the bug of the export percentage bar not moving, so I think it’s unrelated.
It could be but I have never experienced it prior to this, I guess I can easily test
I had this issue constantly on larger projects in C7.5 and am getting it intermittently in C8 also…
Possibly worth people listing what plugins they’re running to try and narrow it down a bit?
Often, but not always, when it happens here, my UAD2 cards won’t ‘flush’ properly according to the uad2 monitor, i have a feeling though that at least in my case Slate VMR & VTM have something to do with it…it does seem to be a little better if i use just the VST3 versions though… iLok related?
Only bit of info i’ve been able to gather after a hang on exit here is this…
holy crap this appeared to have worked for me!
at least after my first few loads/quits… AMAZING!
My thoughts as well.In my limited understanding I had thought one of the main points about using Aero was to keep the graphic processing in the GPU, so more CPU was available for “music”?
Can´t see how this would work with nvidia cards, since settings like these are nvidia control panel related.
My fix of doing a repair install didn’t last long. It worked for about a month but now Cubase is back to hanging on exit lots of times. I’ve not changed anything, and subsequent repair installs haven’t fixed it, so who knows what’s causing it. 
Had an iLok driver update a few days ago… problem seemed to go a way for a few days but i had one hang on exit yesterday… strange…
I did notice that turning off the VSTs in the rack before saving my project, and then exiting… seemed to help when I was experiencing this. I have a new build and PCIe interface. I have not had any issues, yet. My video card is NVidia GeForce GTX 780. I am running on Windows 7(64). I have not applied any of the registry edits suggested here in this thread.
I came across this thread today, and have recently installed Windows 10. I thought I’d give this registry change a quick try… must admit I was very surprised to see all the random ASIO peaks completely (so far) disappear. Whaddya know? It worked 
Does anyone experience crazy real time peaks with ATi graphics cards?
Hi
Upgraded to windows 10 and had real bad crackle and pops while using Cubase 8.
When starting up Cubase all was fine but after a short while the crackle and pop/“static noises” began, and only got worse while using Cubase.
I added this registry entry and the problem is gone. No more crackle and pops.
I have had a lot of problems when running with the Nvidia chip on my laptop. No problems when the Intel HD has been the active card. The laptop uses the Nvidia chip when running external displays and the Intel for the internal so I have not been able to run Cubase, trouble free, with external display until now. Tried the latest Nvidia drivers etc with no luck. So glad I finally got rid of the problem, back to composing and tracking now. Just hoping this registry entry wont give other problems.
UPDATE/SOLVED: Because the problem obviously was gfx card related I tried to totally remove the gfx card drivers an tried to reinstall them but the problems did not go away. Finally I whiped the OS drive and did a clean install. Let Windows install all drivers and now everything seems ok, for now. Running without the reg fix. My problems was OS/drivers related, not Cubase.
Turning off graphics acceleration helped me also, but I’ve also found another solution
Crashes happens mostly with ATI cards, not only in Cubase, but also in Reaper.
I’ve found old, bulletproof and working drivers for my ATI card. Removed latest drivers, reboot, installed that old package — 13-12_win7_win8_64_dd_ccc_whql.exe, reboot again and whooa!!! No more crashes at all with Cubase 8.0.20 / 7.5.40 and Reaper.
Waves V9r29 installer - August 13th, 2015
The new Cobalt Saphira available separately as well as in Mercury, Pro Show and SD7 Pro Show.
Butch Vig Vocals: Sensitivity LED now properly responds to signals from both left and right channels.
Doppler no longer crashes in AudioSuite while processing 4 mono tracks.
Reel ADT: VCO movement now stays limited to VCO range when using the mouse wheel or arrow keys.
GTR: Fixed microphone selection mismatch in some cabinets.
Stomp Distortion: Fixed an issue where Tone and Contour may stop working in some cases.
H-Delay: Note division and MS is now properly saved in MultiRack SoundGrid snapshots when using tap tempo.
IR-1, IR-L, IRLive: Fixed IR locating issue under MultiRack after changing the name of the folder containing imported IRs.
MetaFilter: Fixed LFO sync issue in Cubase/Nuendo.
SoundShifter Pitch: Fixed latency issue under AudioSuite when shifting down.
SoundShifter Pitch no longer creates a fade in on the first region when processing several regions under AudioSuite.
TG12345: Switching presets now advances properly (within each category) instead of in alphabetical order.
Waves Tune, Waves Tune LT: Fixed possible crash in offline processing.
Waves Tune, Waves Tune LT: Copy/Paste Notes was removed from the menu.
X-Crackle: Fixed processing at 96kHz on SoundGrid.
NLS: Drive no longer affects the noise level.
Scheps 73: GUI expand/collapse state is now properly saved in sessions.
Final Cut Pro: Fixed GUI corruption when plugins are instantiated during playback.
Cubase/Nuendo: Fixed possible crashes on Mac when closing and reopening sessions.
Cubase: Plugins with Noise no longer crash when inserted in instrument tracks.
Pro Tools 11 & 12: Fixed various issues with resetting (Alt+Click) controls.
Testing it right now…