2.0t FSI BWT Audi A4 quattro.

I have been dealing with a cam adjustment drifting out of spec as the rpm increases (up to 7 degrees) for several months.  Is there any relationship between cam adjustment actual/ specified and knock/knock sensor voltage?

I have checked the timing marks/timing belt, oil pressure, timing chain/ adjuster, cam adjuster seals,  replaced the cam position sensor, crankshaft position sensor.  I have replaced the cam adjuster solenoid, checked the wiring on the cam sensor, crank sensor as well. I don't have any check engine lights either. Any help is greatly appreciated.