As shown in the image above, I can see the seams on all the tiles at any LOD on the google tileset.
Initially, I thought this was an error with a specific region of the tileset but now it looks like it is the whole world.
I have a material layer that changes the texture when you get close to the terrain but it shouldn’t be affecting everything like this as far as I am aware.
I believe this is the issue that Kevin provided a fix for in cesium-unreal#1530. That fix just got merged in today and will be in the release happening on November 1st. If you need the fix right away, you can follow the Cesium for Unreal developer setup guide to build the latest version of Cesium for Unreal from the source code available on GitHub. Let me know if this solves your issue!
Just a quick note to add that you don’t necessarily have to build Cesium for Unreal yourself from source in order to try out pre-release builds. You can use the built versions produced by our CI system. Instructions here: