This has been discussed in several places but it looks like we don't have an issue yet.

Tile pop-in can be unsightly and disorienting, and could potentially be aided by dithering between LOD levels, assuming that doesn't lead to a performance problem of its own.

An option could be to use the DitherTemporalAA material node in the tileset material, as outlined in this page found by @xuelongmu. A downside of that is that it requires changing the material Blend Mode to Masked, which could decrease shader performance. If users are utilizing masking already on a tileset, though, it presumably wouldn't make much of a difference.

Please add any other ideas for improving LOD transitions on this issue!