Unofficial DMX in Unreal MegaThread. 4.26+

Been using DMX on 4.27 → 5 preview 2 and using a Nova p300c, alot of fun - but got the p600c to test and it does not play so well. It seems to send the data but only shows the data as the cable is being disconnected, it will show the correct light or effects that are being sent, however it shows nothing while connected, and only a 1 second of colour as its disconnected, does this sound like something from UE side? Same instructions work fine on the p300c. I can be available to test any settings if of help.