With Latin at the end of my NG convertible

Hello dear NG driver, so for 2 months already a convertible 2.3 NG has been in possession, which causes problems I knew, but also solveable what I hoped for. It’s a well-known problem and it doesn’t go away – the idle- Have changed so far: – all filters, spark plugs + 10W40 oil – KAT + Lambda – thermoswitch + sensor + oil pressure sensor It just stays up hanging at 1200-1400 rpm and has a constant rhytmus. High/low high/low in the range. Now I have scho n 2x idle controller from Bosch tried: – the 1 also apparently broken – the one from today is NEW but the problem is not solved. Has someone had such a similar or the same problem? Search Urgently close advice, had already been to Audi and today with Bosch, nobody can explain it… Have also a Video+Photos… Thank you from!!! P.S. Everything was checked on false air + throttle valve. On the weekend I drove about 300 KM, the problems were not Apparently only in urban traffic or something…