AC whine when accelerating

Question guys, my 21 Tundra AC makes a whining noise when engaged and the truck accelerates. It still blows cold so wondering if it’s normal or could be on its way out? No noise when AC is off.
it will whine and stop when it shifts to a new gear usually the lower gears I hear it.

since it doesn’t make any noise while idling or higher speeds, I feel like it’s not the compressor. I’m wondering if it’s the serp belt or maybe tensioner pulley?

 

My 18’ with 50k miles does the same thing.

 

Yeah I’m at 58k. Wondering if it’s just normal.