I'd figure I'd post this here just to see if anyone has any ideas. I have a very large ArcGrid that seems to have issues rendering at various zoom levels (I'd love to share the file, but it's 9GB). Attached are screenshots of what's going on.
The issue seems consistent within a zoom level. I attempted to crop the ArcGrid file in order to share it, but unfortunately my cropped version doesn't seem to have any issues! I created a Gist with the SLD, prj and ArcGrid header:
Unfortunately the actual data is too large to share on the ticket, and my attempts to crop it also fail to display the issue. I could attempt to host the data somewhere if someone was particularly interested in it.