First Layer problems

Hey, I have a Vcore 3.1 500 and even after a long time of fails you might can help me.
I never get the first layer right as the printer seems to "over-calculate" the Z-offset when doing the first layer, normally it should flaten out the humps and bumps in the bed but in the areas where bumps are it drives the nozzle too high leading to non-sticking areas and on the other end on humps it drives the nozzle into the bed leading to stop the flow completely due to closing the nozzle by pressure of the bed. in the middle where the z-ofset is set its perfect.

I even ordered a beacon to probe it even better but this didn't help at all, also setting up the complete printer from the ground didn't chance it.

Does anyone ever had this problem? Any ideas how to solve this?

If I'm printing taller things with a smaller footprint everything is perfect and the printer works like a charm, but I bought this one as I need it big, thats the reason I bought this printer.
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