My Quest 2 was driving me crazy because it would repeatedly disconnect from Link and therefore the PC. Finally, I found a function in the Occulus app that allows one to test the USB cable to make sure it is “USB 3”. I ran the test, and my USB 3 cable that I purchased from Amazon was showing up as a USB 2, even after several tests.
This led to my experimenting by unplugging the cable from one port on my computer and plugging it into a different one.
I don’t know how or why, but it worked. Not only did the test confirm that it was a USB 3, but I have not had that disconnect issue ever since.