HFSS Why radiation pattern and gain don't changing due to passes?

[apeeet]

I change number of passes (for same structure), S11 vary - it's OK
But Gain and radiation pattern don't change. Gain stay the same value with 4 digits after point. Radiation pattern stay completely the same values for each angle. Maybe farfield not recalculate?

When I deleted frequency sweep and added it again, after re-analysing Gain and radiation pattern changed for about 0.1%. Can be this true that between 4400 (6 pass) and 47000 (15 pass) tetrahedrons Gain changes for 0.1%? (Planar antenna, total area 90x90 mm, 2.4GHz)

 

[ksugahar]

Please have a look at the setting of your plot? Isn't the pass fixed at any value?

 

[apeeet]

There is always Lastadaptive, right?