The Pi Zero is a pretty low performance device (1 GHz single core, 512MB RAM). If it’s a modern TV, it wouldn’t surprise me if it has better specs than that.
That being said you can find some posts about using Raspberry Pis in this thread:
PS. You can double check the effective resolution of your TV’s web browser by visiting this page from your TV’s web browser: https://whatismyresolution.com/
