I do not have swelling, but I do have the crushing sensation. It feels like my legs and feet are going through an old fashioned washer wringer.
This is a daily component of my PN, and probably my most painful symptom. It is usually worse at night, but can start in the morning. It seems unrelated to anything I do, and "feels" like it is coming from the bones themselves. My legs are numb to just above the knees though, so all sensations are untrustworthy.
Oxycodone with the gabapentin provides enough relief for me to function.

I have small and large fiber hereditary neuropathy, primarily axonal, with visible muscle wastage.