Ruff idle, cylinders 5,7 &8 miss fire. All cam and crank sensors changed. Timing reset, when the Vanos solenoid were cleaned it idled worst

What is your question?

Ruff idle and run, no particular code revealed except an O2 sensor code. Timing appears to have jumped in the past but was reset. Plugs and coils all replaced OEM. Valve coverages replaced.

What makes this problem better or worse?

Constant issue

How long has your 2006 BMW 550i had this problem?

Months