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.

Edit:

So you don't use the autobet to play the game. Hm, that is strange because so far, I don't have the same experience as you. Did you check everything on your PC and make sure all of your software is up to date? What is the result if you don't use the autobet? Did the temperature is getting high too? If it's not getting high, perhaps, you can use manual bet to prevent the high temperature.