I'm scratching my head on this one as I have no idea why it's happening but in substance painter I hand painted some lines onto my mesh and they are nice and straight in the viewer.
https://1drv.ms/u/s!AvqNviheX7MmjHIYnRqM93AHa9Db?e=YC99f1However when I export the textures and put it all in Unreal Engine. the same lines are wavy and not at all straight.
https://1drv.ms/u/s!AvqNviheX7MmjHOH3TYI1imbsWRp?e=4B09jgI can't figure out why that is and I have tried everything I could think of. The mesh was made in blender and I triangulated everything before putting it in Substance painter.