Couple things to try.
Continuing the discussion from Known issues 07/24/24:
https://www.reddit.com/r/wow/comments/1f67h65/gfx_render_scale_bug_semi_fix/
Unfortunately this forum is player discussion, not sure what communication you were hoping for beyond that. Have you put in a bug report also? Not guaranteed to get a response, but will put the information to the development team.