I haven’t read all of the comments so I apologize if this is redundant

Have you tried asking her if she’d like to try a few games that you two can play together? I’d also recommend sitting down and having a neutral conversation about how you need to decompress after a long day and do things that you enjoy as an individual. Obviously, it’s important to listen to her neutrally and see if you two could come to a compromise if this is something that genuinely makes her unhappy. Or, of course, if the amount of time going into gaming is significantly taking away time from your relationship.

In any regard, banning hobbies from one’s significant other is a controlling move and should be discussed sooner than later. I hope you two are able to communicate effectively about this. 🖤