X5 E70 M57 stalling:fuel pump error

[Chris92]

Greetings!

My E70 3.0D M57 173kw has been acting weird lately.
Whenever my fuel tank goes below 1/2 it will randomly stall. Sometimes after starting up, when driving on low rpm or when cornering in city speed.

I have read online, watched countless hours on youtube.
So far I have done everything that solves the problems for others but mine keeps doing that.
I have done the following things:

*Replaced EKPS unit
*Replaced low pressure fuel pump
*Cleaned the tank and the little mesh filter under the LPFP
*Cleaned the suction jet pump and hoses on the left side of tank
*Replaced the fuel filter
*Checked all the wiring around LPFP

In Autel diagnostics low fuel pressure is 2.5bar when ignition is off and 4 bar when it's on.
In the secret menu of the instrument cluster under test 6.00 I have 30liters on the left side of the tank and 1 to 8 liters on the right one. It's jumping when driving.
What else to look for ? I am totally exhausted. Please help !