Sony android tv help

Hi new to Kodi I have two devices on home network Samsung S7 edge and Sony 43xd80 android TV. The s7 is connected by wireless and the streaming is great. The TV is on Ethernet has kodi downloaded through GOOGLE PLAY but the buffering is dreadful I have tried the advanced settings to change the buffer but not seeing any significant change. Any suggestions how I can change things? I have bt home hub and have disabled smart set up as well.