Theres some good ideas there. You may not like reading but it sounds like she didnt like but still tried your hobby so give it a go. Theres a happy medium ground, maybe get some video game related books that you might enjoy reading more?

>I feel like I see my friends online (Specifically the ones we've seen get married) and as a couple they love doing the online thing as a couple.

Comparison is the thief of joy. Those couples might both enjoy those things, but it sounds like your partner doesnt. Thats not a bad thing. It sounds like shes more of an in-person social person rather than online.

>Perhaps though, this is just not something my girlfriend does not want to do and would rather be offline. Maybe I need to further reduce my online time but having come from doing this every evening, down to 3 evenings a week seems like a big compromise on my part.

It can be hard transitioning from a single lifestyle full of time for hobbies to in a relationship, but there is a balance that can be made. At the moment I imagine she feels like shes only there to have the intimate parts of the relationship.

As a straight to the point question, on an average evening at home, would you rather spend time with your partner, or be online with your friends? Theres no wrong answer.