When I render in VIsualize scene it splits it in 4 pieces. so efectivelly it's not doing render in amount of passes I've specified.

This is screen after doing 50% and doing agaoin 64/150passes:

so it's now working on the lower right corner of image.

4th square added - working on 75% again 60/150 passes:

So my settings are not what they were set.

Is that standard or there is something wrong with my settings.