It varies
I drove I=10 in the 1980s, I thought it felt like a paved over cattle trail , and this was in a van conversion
I drove I=40 in 2012 with our DP and it beat us to death and the trucks were terrible
Drove I=10 on the return trip and it was a much better road,
But Az is always going to have wind and fast trucks on all interstate roads, when the winds get bad , I just pull off the road and kill time until conditions are better, usually about four hours, I can make up the time, by driving later into the evening ....If I want to
I can explain it to you.
But I Can Not understand it for you !
....
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1997 F53 Bounder 36s