Now I'll preface this by saying I am not your target audience for the most part. I'm not into NTR, sharing/MMF threesome at most.
So I don't get off on the whole humiliation thing.
That said, I think inter-racial is fine, "interracial" is cringe.
I don't mind black characters having sex with white characters, but often it comes off too forced. Like, "This is your boss Mr. Ooga Booga Bix Nood and he is here to breed your wife with his superior BBC"
Or when the only guy MC has a MMF threesome with is curiously the only black person in the game.
I'd like for black men in porn games to be more than sex objects to satisfy some sort of racist "beastiality" fetish.
Also, don't make him the token black guy. The more male characters you have, the less forced it comes off.
As for black female characters, I think they often look "off", especially their faces.
I don't particularly like it because I don't like the fetish to begin with (i do like cuck style stuff do not like IR fetish stuff). I have less of a problem in games/situations where it feels organic - perhaps this is what you're saying.
Like take the game "The Office Wife" as a popular example. Zach appears mixed and I didn't mind him at all, he feels realistic, he's a computer nerd and not the "bbc thug" stereotype. On the other hand, I hated Darius and Dixon for the same reason, completely forced - and immediately you know you're playing a game made by someone who specifically gets off on this stuff.
Another thing that drives me nuts in these kinds of games is the black characters always seem immune from humilation themselves - I'm thinking stuff like "The Spellbook". Of COURSE the black guy easily beats up the former white douchebag boyfriend (not the mc)- because why not, he's mega alpha superior alpha male *eyeroll while imagining the dev salivating while writing*. They don't even feel like characters, just mere objects as plot devices.
Finally, there never seems to be a happy medium. I don't mind games where there's an occasional IR encounter, but it always feels shoved down the player's throat, like the bbc fetishists can't imagine anything outside "then she gets gangbanged by 5 guys" as being the gold standard for "hot sex" scenes - case and point, look at the fan art threads for almost any ntr game and it's full of this garbage.
Obviously, I recognize this is all subjective, and people have their own unique tastes and preferences- and one man's garbage is another man's gold.