Will We Ever See Full End-to-End 64-Bit Floating Point Audio Engine in Bitwig? – Page 8 – Bitwig Forum

I’m not really sure why you need 64 bit (double) “end to end”.

32 bit (float) is perfectly capable of representing the sample.

Any plugin that needs to use doubles will, it gets an input buffer of floats and sets an output buffer of floats but can internally use doubles for any processing that needs it.

As long as the mixing engine then uses doubles there is absolutely no point in having “end to end” doubles and could have a negative approach: twice the memory use has an effect on the cache, using doubles will also half the throughput of any ‘vector’/SIMD processing.