Don't believe everything you read on the internet.
I've been hearing a lot of people complain about the surface having performance issues. I own a Surface and I haven’t had any issues with lag or freezing.
Don’t take my word for it? Then have a look at this.
I was going to post my own video but I came across this one which sums it up. Now don't get me wrong the Surface isn't perfect but it's definitely a lot better than some people / reviewers have been making it out to be. Now to each his own but for my needs the Surface is by far the best tablet on the market.