Magnussen had troubles with porpoising too:
“He talked about how he had some nerve pain going out in his arm and in is his jaw. I talked about it with him and we kind of saw that it was because of the bouncing. The spinal cord just pushed, pushed all the time on the nerves.”
Kevin Magnussen suffered nerve pain in his arm and jaw as result of the porpoising effect on the Haas 2022 car.
www.planetf1.com
And there’s also this video of Daniel where it looks like he’s linking the back pain hes having to the bouncing too