I have noticed that if I use one of the H90 Headspace presets it will generate the loud white noise. Reducing the Mix level has a big impact on the white noise. But it affects the nature of the preset.

I have also found if I use a program with Headspace I don’t get the same level of noise. I also downloaded Brock’s ReVerbed Space and that did not have the white noise problem. So it seems possible to build a program with Headspace, but do not start with one of the stock presets. Of course it may be different for other users.