Hello ChuzpZz. I guess in 2014 you used "MagicInfo VideoWall" with "MagicInfo VIdeoWall Author". On that decade, VideoWall Author was able to cut, stich, crop, resize, etc high resolution images for the videowall to look nice.
Current MagicInfo Server have some changes, where you need to use custom made content and sync function, or make additional serial connection from Screen to player and setup in magicinfo to use VideoWall Layout. Some times is not user friendly, but we can offer you a remote support on that.