My computer is a i7 5960X @ 4.4 GHz with 96 GB of RAM DDR4 Quad-channel and SSD SATA-3 disk, USB RME Fireface UCX. Everything runs lightning fast, BUT I get this absurd error message when mixing down a stupid 3 tracks song at 96 KHz/32 bits WAV format with Cubase 8.5.20 and Windows 10 Pro Anniversary Edition, 64 bit.
I also notice glitches during playback, with zero ASIO driver errors.
I use ASIO buffer guard, Priority Boost and Steinberg Audio Power management plan.
It must be a bug.