We've dealt with this for a while now but I am beginning to wonder how many others face similar issues.
We've noticed that on aprons since the last world update we've been able to see what looks to be gridlines between the ground tiles?
Have seen this in areas with a custom CGL and without.
Issue appears to go away as you move closer or further away, although that is not always the case.
I have attempted to point them out, hopefully you can see them,
look forward to hearing from you!