I see some of that with our FW, but not quite that much. I think it's worth investigation to make sure something is not wrong. I'd contact the FW manufacturer and send them the video to see what they think. Another option would be to share the video with your dealership's service manager and get their ideas on whether this is normal or not.
For that make and model of FW/chassis, it may or may not be normal, but I'd rather be safe than sorry. This is one of the times I'd rather listen to the pros, than rely on an internet forum for answers.