LED TVs all run at 60 Hz or 120 Hz. Blu-ray content is at 23.97 Hz. In order to playback at 60 Hz there is what is called 2/3 pulldown that is done either by the playback device or the TV. This is also called inverse telecine, film, or movie mode. This mode is usually set to off on the display and must be turned on.
There are two issues:
1. The correct mode on the display isn't turned on for 23.97 Blu-ray content
2. There can still be motion judder
Contrary to what was mentioned about it being a problem with HTPCs, an HTPC is the only device that can provide complete judder free playback at 60 Hz from 23.97 content. If you use Red October HQ in JRiver and turn on Smooth Motion in madVR there will be no issues with any TV of any brand.
Here is a listing of 2015 TV's that are judder free with 24p content. Just look at the first column "Judder-free 24p." Again this doesn't really matter if using Red October HQ in JRiver.
Judder on 24p movies on 2015 TVs