Point cloud as a Terrain in Unreal engine


I’m currently working on a project where i’m going to use a point cloud as a terrain in Unreal engine.
I’m using CloudCompare to clean up the point cloud / remove vegetation ect and also to export a height map from the clean point cloud.
The problem is that the height map i’m getting out of CloudCompare does not fit correctly inside Unreal engine, compared to the original point cloud, the mountains seems to either be too tall or to short.
The way i’ve been exporting the height map from CloudCompare is: Rasterize - Raster - Export heights, then i’m using Photoshop to turn it down to 16bit grayscale and applying equalize histogram.

Does anyone here what the problem could be? it seems like the heighest parts of the cloud turns out too white in the height map?