My cycling shorts numb my penis

So, this is a bit awkward but basically I've been riding my bike for a good two years now and never had a problem with anything really. Lately I started to ride further and thus had to get padded shorts in order to be more comfortable. Now the first 2 hours on my bike are pure pleasure with the padding doing an amazing job, however, after that, I can feel that my penis is going numb? As in less blood flow, but not no blood flow, and a similiar feeling to when you lay on your arm for too long.

Mind you this has never been an issue in my life, and I cant feel any discomfort on my penis at all, which makes me wonder what this could be. Does anyone share this issue? Could getting different padded shorts work for me? Maybe a different seat height, although that has never really been a problem either.