Yes there was a complication with the sound on episode 54.
Turn the sound up on your computer and one the bottom left by where you hit play make sure the sound is turned up there. Both of these help. At 5:37 sound improves when everything is turned up.
Have you changed running technique or are you transitioning to wearing a flatter shoe?
You aren’t hitting the cause of the issue which is why you aren’t seeing improvement. Have you addressed things up/down stream of the issue?
This hits on some of the things in the video: