Let’s force the 4 outputs with an EDID and do eyefinity to have an desktop extended over 4 screens.
Check that the outputs are correctly configured in the output tab (if you have done the initial setup on a single screen, the resolution of the outputs has been done at the ratio of an output and it is necessary to correctly configure each output.
Disable monitoring (or possibly NDI stream)
Display a test pattern on all outputs to check that everything is working correctly.
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