Originally Posted by redlude97

Are they too narrow or low volume?

Originally Posted by DrIsotope

I actually got this on a ride recently, in shoes that I've ridden for thousands of miles with no issues at all.

Turns out my socks had snuck into the dryer and shrunk a little, and were too tight. I stopped mid-ride, took 'em off, stretched 'em out as best as I could, put 'em back on, and the rest of the ride was fine.

So short version, before anything else, try different socks.