HDMI cables

Question for you experts, I bought a LG OLED 4K B6P TV and when I am using Kodi Krypton 17 RC1. If I change screens like going to the TV guide, tune a TV channel, or go to the home page the screen goes black for about 1/2 to 1 second then comes back. I was wondering if this could be a handshake issue with the HDMI cables I am using? I have my HTPC connected to my Integra AVR and that in turn connected to the HDMI 2 input on the TV. If it makes a difference my AVR does not do 4K pass through. I was wondering if hooking the HTPC directly to the TV might be a better way to go. Any Ideas?
Thanks

Mods please move this post as I just realized I posted in the wrong forum