Step parents vs step kids

Chelsea🇬🇧

My 9 year old son and my partner don't really get along. My son can be very disrespectful towards my partner. We have been together 3 years going onto 4.

All is great apart from my son and partners relationship.

My son enjoys Xbox like most kids, but my partner doesn't see the obsession and has never owned a console of his own. He doesn't think my son should keep his console because he's only nice to my partner when he wants to play on it, otherwise he will completely ignore my partner, never uses his manners towards him and is genuinely just plain rude.

It's causing issues, if I take away his time on the console he improves but as soon as he has it back his attitude is back to square one.

What do I Do? Any advice welcome.

Thanks.

EDIT**** I have sat down with my son multiple times and repeatedly asked what is wrong and why he doesn't like my partner, his answer is purely "because I'm not allowed Xbox whenever I want it" my partner has never hurt or done anything to my son as they're never alone together. My son doesn't have dad around unfortunately no.

If my partner ever hurt my son I would instantly leave. I have noticed my son doesn't like having ground rules as I was always a really soft mum, I would let him do what he wanted when it was just me and him whereas now, my partner taught me to lay down some house rules.