Samsung Wireless connection faults. Wifi Networks slows Miracast/Wireless casting.

So as the video title shows. Here i'm talking about a problem with samsungs tech on their phones or possibly their tablets to. Here when you have your WIFI connected to a 'ROUTER' or any other HOTSPOT/TATHERING device. Your Miracast/Wireless casting (Either Wireless Dex or Smart View) Will 'Delay/Lag/Stutter' Harder then as if you relied for your internet via mobile data. Somehow it decreases it's 2.4ghz/5ghz signal in half when you connect to your home Wifi/etc. So if you want Speeder performance when casting. Do not connect to ANY network system. Just leave the Wifi On (for casting) but make sure NONE of your networks are on Auto connect. This'll make the casting work 2-3x better and faster.
I have a Samsung M5 Smart Monitor and when i activate my Wifi to connect to a home or hotspot/etc network. The Monitor starts having bandwidth problems. But when i leave the connected Network and not connect to ANY network (Besides leaving the phones mobile data network on.) It works fast and snappy. No bandwidth problems or stutters.
I'm not sure how Samsung could fix this. But maybe they can make a Antenna system specifically for 2.4ghz and another antenna just for 5ghz for JUST hotspot and casting. That way it won't break needing to draw some power from the main antenna's? Not sure.
But that is the problem. If you want to cast wireless to your Smart TV/Smart Monitor or to a external wireless HDMI adapter plugged in via HDMI plug. DO NOT let the phone connect to a WIRELESS NETWORK. Then the phone will run snappy and fast and no bandwidth problems.