Plexweb - the server app, does have a player in it. Plexweb runs in your browser. Your browser, along with everyone else’s browser, sucks at video playback - 'cause it’s your browser.
Plex for Windows/Mac
or
Plex Media Player
are Two powerful Player apps. They will basically Direct Play anything you throw at them, while your browser will likely transcode everything you throw at it.
I know which one I drag to the TV and it’s NOT Plexweb.
PMP is here:
PMP has more powerful features, the settings of which are available only in TV View. Once set, they’ll work in any view. TV View rocks on the TV (as you might imagine) if you have a 10’ Remote system - or don’t mind using the phone app to control it.<—or the laptop from which it came.
Most people will find Plex For Windows/Mac suitable for their needs, but you can run both to pick the best weapon if a situation calls for it. <— there is no situation, other than that of immediacy, or lost in the desert with a great Wi-Fi Signal, that would facilitate Plexweb’s use as a player to watch something on. <—at my house.