If its a TV not a PC monitor then you will need to upscale like galach said, but that won't change the actual in game interface.
I made a interface for 4k, not sure if it will work in Takp but I am working on converting it to live client might work then.
https://www.eqinterface.com/download...php?s=&id=6847
Also, use /
chatfontsize 6