Evident delay for gaming

[ogs]

The Phantom system e.g. with optical input or bluetooth has a delay of 150-200ms.

Well, 150-200 ms is actually too much for live use. For ordinary playback of stored (or streamed...) music delay does not matter as there is usually buffering involved anyway, but for live use latency should be short - around 1 ms... is a good figure.
Be certain that Kii has thought of studio use when they designed the Three with a setting that gives you low latency. If the Three was only delivered with the 90 ms latency you'd probably never see it in a studio!