So long as you append the "PC" part to the name, no one will associate it to the Nazi thing. "PC Master Race" is pretty casual and more importantly unserious internet term that's just become a self-deprecting name for PC gamers.
Except for the more than 99% of non-gamers who don’t hang out on boards like /v/?
I’m not accusing anyone of being a Nazi, just pointing out that outside of a very specific subculture this is a very risky joke (and not a particularly funny one in any context).
You probably wouldn’t call people -fags (newfag, macfag, eurofag, etc…) either, even though “master race” carries far worse connotations than “fag”.
I think the term is a bit more normalized than you make it out to be.
Welcome to the Internet?
I’m not trying to criticize anyone, just offering a friendly reminder that letting these injokes leak outside of 4chan or reddit can have unfortunate consequences since most people won’t be as understanding as you or me.