I admit it. I'm slow. I upgraded to the November update at the end of December, and had to eventually research where the heck the synth rack disappeared to.

I like the change! I mean, after I finally found it.

In the research, I found the updates to the WASAPI driver mode quite interesting. Accordingly, I tested it out on a couple recent band projects that I'd used ASIO on. I always record in 44.1 so I don't have to convert later. I'm pretty much sure that my bit depth is set to 32. That's what I would have recorded the project at 44.1/32 bit in ASIO.

My audio card is older, but drivers are written for it in WASAPI at 44.1/24 bit depth.

When I flipped the driver mode from ASIO to WASAPI (exclusive), there was audio at playback, but completely sped up, and with noticeable clicking.

Is this fixable in Sonar ... or is it going to be problematic forever because the device's drivers in WASAPI are not the same bit depth capability as ASIO?

I thought the timing difference would only be in a change of sample rates?

Any insights towards solving the compatibility (if possible) are warmly appreciated. I know that I can create new projects w/ the new driver set ... and that should work, but I'm wondering if there's a way to access the lower latency w/ my already recorded projects?

Thanks!

If your interface has decent ASIO drivers (and it sounds like it does), you should stick with ASIO. My understanding is that the WASAPI improvements are for sound cards that have no ASIO drivers, like built-in Realtek audio.
 
Regards,
Dan

If you have a working ASIO driver for your interface chances are WASAPI mode is not for you. If you really want to mess with it anyway, check the Windows settings for the device to make sure the sample rate is correct.

So far as I know, there are still no commercially available interfaces with converters that can record or play back audio at 32 bits. Bit depths higher than 24 are used only for internal calulations and storage (i.e. WAV files). I have seen playback fidelity and speed issues with WASAPI when the buffer is too low. Try raising it a little.
 
But if your interface has native ASIO drivers, it's highly unlikely that WASAPI will outperform them. WASAPI is primarily useful for systems that have only onboard integrated sound available.

brundlefly
So far as I know, there are still no commercially available interfaces with converters that can record or play back audio at 32 bits.

This is true but some ASIO drivers are fixed at 32bit. I believe it has to do with the extra software provided with the interface.

The "sped up" you refer to sounds like sample rate, as mentioned above.  If yours is set to 48 instead of 44.1, the pitch of a 44.1 file will shift up about three half steps.  Is that what you heard?