Issue with multiple GeoTiff files

[vts-yashpal]

When i am using this command to make quantized mesh terrain it takes too much time, although the input files are very small, one file is high res 2.5m file about 60mb, & another is very low resolution file just 2kb file of very small patch,

Both of these files are of distant region hundreds of km apart, My usecase is simple, I want to keep the base terrain flat & as the user continues to add the high resolution data, I would tile the entire folder again.

Ideally it should tile for only the geotiff file bounds, but i think its tiling the whole area including the midway gap between those two files. If I am tiling them separately then I dont know how to combine the result.

I am using this output at cesium for unreal 3dtileset actor, I cant use multiple tilset actor (cant even use cartographic polygons), because multiple tilesets will produce problems for raster overlays, that's why I want to keep single base layer. As the user continues to add their high resolution patches it should update the base layer.

Please help me with this, Suggest solutions regarding speed up of whole pipeline or how to merge the output,

Command Used (I have decreased the intensity & changed some other params but still it is taking multiple hours)

docker run --rm --memory="12g" --cpus="10" -v "${PWD}:/data" gaia3d/mago-3d-terrainer `

-input /data/input-output /data/output
-maxDepth 16 -rasterMaxSize 16384
-mosaicSize 64 -intensity 2
-interpolationType nearest