Wait, can you explain more details about autobet? Because I just think that you use software to play gambling such as bots or applications that help you run automated. If that so, perhaps, that is why the temperature on your PC is high because, as far as I know, the software will load the component inside the bot to run automatically.

But I don't think the gambling website will use our PC to mining cryptocurrency, although that can be possible if you download something from the site to run the games. There are possibilities to see that things happen in PC, but unfortunately, we don't know why. Perhaps, you can restart your PC and only use a browser which doesn't consume many memories.