@Pedro Tera
I run nine Dahua HDW5231R-Z, one HDW4231EM-AS, and a SD1A203T-GN. The SD1A203T-GN is under testing, so it is on and off at times. The screenshots I took when 10 cams, while the SD1A203T-GN is off, are running full time recording. See the following screenshot for Frame Rate settings...