Why does my Volume adjust from loud to mute when it wants on my macbook pro?

Hi!
My volume on my macbook pro decides what volume it wants to be, from loud to mute, and vice-versa. I cant stop it, I dont know how to! Please help me!

This is related more to physics than to anything else.. At the same source signal strength, higher frequencies are more easily attenuated. If the receiver sensitivity is the same and the background noise level is the same, a higher frequency signal will have a shorter range than a lower one.
So, your tests sound like they produced exactly the results that I would expect.
Ways for manufacturers to get around this... they can use an antenna with higher gain with the higher freqs. They could pump out more milliwatts at the higher freqs. They can come up with receivers that are better able to pick signal out of noise...
If you don't have a ton of 2.4 GHz sources around your house.. stick with 2.4. If, like me, you can see ten or so 2.4 GHz wireless networks from your living room, 5 GHz looks like a nice place to go, understanding that the radius of the network will decrease.

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