In my task I'm using a CM2009 IC between true VGA controller and VGA output connector. It is really pointed out during the datasheet for this IC that I can use EMI filters on HSYNC, VSYNC and DDC channels right right after IC and prior to VGA connector. Even though https://kamerongkvuf.howeweb.com/31779846/fascination-about-emi-emc-filter-circuit