Question: For some reason whenever i turn off and turn back on the quad vtx resets to 25mw even if i save the setting.

Solution: The button and SmartAudio cannot be used at the same time

You can either change the vtx setting by button or SmartAudio.

Solution A:If you only use the button, you can find SmartAudio on the Ports page and set it to Disabled.

Solution B: If you only use the SmartAudio, you can find more details here to know how to do this.