Overtaking despite a no-overtaking rule? Coercion?

Hello.

I have a question regarding the overtaking ban.

We have a roughly 5km-long country road that's long past its prime. There are deep potholes and bumps along the edges of the road on both sides the entire way. The road has no central reservation. The speed limit there is 30 km/h (beware of road damage), and in some places, 30 km/h is actually too high. Furthermore, overtaking is prohibited along the entire stretch, with warning signs posted about every 300 meters. Since this is my daily commute, I know the route very well and know when each pothole will appear. Therefore, I drive a little further in the center (as long as there's no oncoming traffic).

I am constantly being urged from behind with headlights flashing to move over to the right to let the vehicles that are in a hurry pass, which is sometimes not possible due to the unevenness of the road unless I slow down to walking speed.

Most people try it anyway, putting themselves and others in danger because there are also extreme bumps in the oncoming lane.

How do I behave correctly in such situations?