I spent a week to solve this.
The second TV is better, but max after 20 min it disconnets too.
There are more info
Intel(R) Core(TM) i5-4210U CPU @ 1.70GHz
Intel(R) Dual Band Wireless-AC 7260 - driver 17.1.0.19
WiDi adapter is built in TV. LG 45LB650V ZN