3 Vivitech DU9800Z-BK
datapath fx4 HDMI (everything up to date)
The converter micro black magic HDMI to sdi.
Basically when I connect them directly to the video card all good but I put them on the datapath (datapth via 24” display port - DisplayPort”) I have the projectors resolution at 120hz 1920 x 540i.
Anyone can explain what I did wrong?