It does on my system. I do control the buffers within Sonar using WDM drivers for my hardware. Maybe I don't know just what is being said here.
From the Sonar X3 manual page 1294
All of your audio settings are listed in the
Preferences dialog box, which you open with the
Edit >Preferences command. The following list summarizes all the settings that the Wave Profiler sets.
You can override all of them except what audio drivers are listed in the Drivers tab:
• Input and output drivers
• DMA buffer sizes (in samples)
• Mixing latency