In my undertaking I'm using a CM2009 IC between precise VGA controller and VGA output connector. It is really mentioned from the datasheet for this IC which i can use EMI filters on HSYNC, VSYNC and DDC channels right after IC and just before VGA connector. Nevertheless there isn't any https://jaidentphyn.worldblogged.com/37164488/emc-emi-filter-for-pv-inverters-an-overview