With low buffers say, 128 and below I get more CPU spikes than with the same settings in a 32bit OSX,
When I boot in 32bit I can get to lower latencies then in 64bit mode
So
32 bit osx 32bit cubase - no spikes
32 bit osx 64bit cubase - spikes
64 bit osx 32bit cubase - some spikes
64 bit osx 64bit cubase - spikes deluxe
Running on a Mac Pro 2,4 Quad with 8Gigs of RAM… 10.6.6 and a MR816 on a TI card with 1.7 drivers…
While the main machine I use for my DAW is win 7 I had this exact same issue and the problem was that I had placed some 32 bit plugins in the directory for 64 bit vst plugins. (32 bit in windows are supposed to be in the steinberg direcory for x86) If I used them in a session exactly what you mentioned happened.
I have a macbook pro which I also have cubase on (dongle protection is great isnt it?) but being that my copy of C6 is shipping I couldnt check how they differentiate it yet.
I’m just guessing but it could be something similar as it sounds identical to what was happening to me in Cubase when I moved to 64bit windows
Just loaded a ‘old’ project and asio meter hits red with 12 audio tracks with only DSP based effects (Duende, Powercore and Liquid Mix), with a buffer of 192. 256 gives somewhat better results but 1024 was the only setting that worked allright. So what is changed in the buffering of the 1.7 driver?
I can confirm that 1.7 drivers are performing very badly especially at lower latency
I deleted the package reciepts and re-installed 1.6 and performance is much better
The question is: does the 1.7 driver perform worse in a 32-bit environment (32-bit driver and 32-bit Cubase) than version 1.6? Or is it rather that moving to the 64-bit domain affects the performance?
I’m getting worse performance here too with the 1.7 driver on a 32 bit Snow Leopard Mac Pro. Can somebody tell me what I need to do to unistall the 1.7 driver completely and go back to 1.6?
Ok found it. The instructions on removing the driver are in the Getting Started document. Quite a hassle to delete all the files (pc’s are a lot better in this respect) but anyway I rolled back to the 1.6 driver and all the pops and dropouts have gone so it looks like 1.7 has a problem, just as others here have said.
The last week I was getting sick with my studio setup.
This 1.7 drivers don´t work fine in Mac computers. I back to 1.6 (No problems)
Before read this post i don´t know what was the problem… the computer… Cubase 6… The firewire…
Now with de 1.6 I can work.