>German Autobahn is crazy and non-pleasant if you drive slow, but in Switzerland everyone follows the speed limit so it is quite relaxing

The German situation seems vastly superior on the basis that whoever is the "odd one out" or violating the norms should be the one having a bad time. Basically incentivizing homogenous and/or predictable traffic flow, which is safer.

Well overtaking with 135 one drive 130 should not lead to people driving 2m in your back, which is quite often the case when I am on the autobahn.