I have also heard that 1.5 is ideal, and even that anything shorter might not be as good. However, at one time I was playing Tidal from my computer to my main system's DAC and that required a 3 meter run. So, I bought a modestly priced 3m AQ Cinnamon USB cable. I didn't hear anything unusual, but I didn't do a direct comparison. My experience with noise and distortion is that I don't notice it until it goes away. In any case, with casual listening I did not hear anything that made me think, "Boy! I need a shorter USB cable." But like the man said, your experience may vary.
PS. I use a 1m USB on my desktop and .5m on my main system. Perhaps it's time for an upgrade because I need a little more and a little less of a good thing.:)