That depends on what kind of tv you have and laptop you have.. whether your laptop has widi capabilities or not. Most tv you'll need to get a receiver.. while smart tv has connectivity capabilities.
There are lags and sometimes, it'll have that choppy look.. The lag I think may be due to your home connection issue or laptop sometimes. Sometimes you'll get that choppy view for a couple seconds before it comes into focus. It's convenient though.. nice to just sit down and do everything from your notebook. Your laptop is pretty much your new remote. I don't even know why I still have cable actually... almost everything I watch is online, even cable shows, lol.