Unreal doesn't use simplygon - you can plug it in but the default is just a rudimentary (shite) decimator ok so.. this is a gross oversimplification but hopefully gets the point across The primary function of LODs is to reduce the amount of stuff on screen that your machine has to process so that it can draw frames more…
Okay, solved for real this time. With some help from email support, found out that it is a firewall issue. Changing my home network settings to Private rather than public allows the library in marmoset to function correctly.