CrazyDiamond

Hello. I replaced my old router with a Keenetic KN-1811, and problems begun with LG Screen Share. Any movie I watch online freezes for a few milliseconds every 5-6 seconds. When playing a movie on a PC, there is no any problems, so this is not an Internet problem. But as soon as I transmit the image on LG TV over Screen Share, it immediately starts to micro freeze. TV is connected to the router via cable. Moreover, exactly the same problems occur when playing a downloaded movie if it is played via Screen Share. The saddest thing is that the old router, which was long overdue for the trash bin, coped with this task. Any ideas?