I don’t think a host needs to play differently just because they are the host.
The etiquette of being a big winner ideally should be the same, too.
If your game involves a lot of razzing, the host can participate in that too in theory… Just have to gauge whether the group also sees it that way, I guess.
And presumably the OP isn’t winning big *every* session, right? So the occasional big win shouldn’t be such an issue.
In my own game really the only thing different for me as a player is that I have to stay to the end no matter what. I can’t leave if I’m running bad or just not feeling it. I could sit out, I suppose, but that would be odd.
This may result in me playing a bit more carefully and conservatively in my own game than in others just because I know I have to stick it out regardless of how I’m running.