I think you can look at the settings for this function. There's an icon there that turns it off so you can easily use your TV in the future. I think you might also find a tool like Chromecast screen mirroring Mac very useful. I have been using it for more than a year since I got a new tv, and I still love to watch my favorite tv shows and TV series on the big screen. This is a significant benefit that helps me save time and watch movies while working remotely.