Wired is usually more reliable. But it's understandable, lots of places it's not possible to run Cat5.
What kind of router or AP do you have?
There's faster and slower WiFi. You're going to need one of the faster variety.
Are there any other electronics at each TV? Roku, Playstation, SmartTV's?
If so, you might need something with multiple ports unless they're all wireless as well.
This one is cute.
Cat5+ - best, but needs to run cable if not preinstalled which varies by construction age.
Moca - best over common wiring, sometimes interference issues need to be sorted
Powerline - can work well but can also be limited to half the power outlets
Wifi 5.0 - signal penetration limitation based on house construction / distance
Wifi 2.4 - better penetration, more crowded spectrum