@Liviuss We are currently working on it to improve stitching, in the meantime there is one useful operation you can do on downloaded tiles. Bring up "TerraLand Terrain" component (Tools => TerraUnity => TerraLand => Terrain), go to processor "STITCH DATA TILES", press button "STITCH TILES" and select the Elevation folder in your server containing heightmap tiles and press "Select Folder". This processor will load up each heightmap tile in the server, check all its neighbors and matches up all borders corresponding to neighbor tiles. After doing the above operation, you can see the tile borders are now matched up without runtime border matching operation but still needs proper stitching function to remove seams. We'll remove the bugs in the auto stitcher in the RuntimeOffline component and let you know about it.