Why is there no lower buffer size than 64 samples?

[Wolfgang]

Using SD3 as a VSTi in DAWs like Cubase or Studio One lets me set the buffer size down to 32 or even 16 samples. So performance wise there is no problem with playing at such low latencies. Why can’t I set the buffers in the standalone app any lower than 64? Is there any technical reason?

Superior Drummer 3 version: 3.2.4
Operating system: macOS Mojave (10.14)

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