I'm at work now and can't test this myself, so please bear with me. I take it that disabling water simulation makes sdhdship.exe work with decent scaling and without other outstanding issues, like dropping to single-GPU performance? I've also noticed that keeping HairWorks on stops scaling with this profile entirely for me. No matter how long I wait performance won't jump above what a single GPU can do. This was on 1.03, haven't had the chance to try it out on 1.04 yet.