Particle measurement Euro 6 – no TÜV

Unfortunately, the number of particles in my Passat B8 (Euro 6) is far too high that I did not get a TÜV. Now the question arises whether a cleaning/renewal of the DPF does anything at all? The car drives perfectly and has no error messages. By means of VCDS a forced regeneration has already been carried out, which unfortunately did not bring anything. Soot content in the filter are currently 10g. Motor is a 1.6 liter diesel without AddBlue.