Works fine with my Samsung TV, no tweaks necessary really (mine is 4K, so mainly just have 4kp60 enabled in config.txt).
What model Samsung?
Is it 4K?
Are you plugging into the right HDMI port (one near the power input)?
Are you using ethernet or wireless?
The model its UE49J5200AWXXC
Its no 4k
Yes I have tried pluggin in both connectors HDMI of my PI
Im using ethernet
I found the problem. It was the adapter and didn't work very well. I have bought a new one finally.
Thanks for everything guys!