It wasn't her best performance simply due to the fact that there was too many gimmicks. It certainly wasn't "awful" though Keep your biased opinion to yourself
random question but to me 'Blank Space' is very obviously influenced by early Madonna. You have her in your avatar. Why do you dislike Taylor so much? It's not like either act was ever the biggest vocalist but that does not matter. Also early Madonna was far less sexual than she was by 1990 and after that. Why hate Taylor? She's definitely a better songwriter than Madonna ever was and that's not even debatable.