I have managed to create a 3D-landscape from DEMs and are trying to get my building layer in 2.5D in this landscape. My buildings are retrieved as polygons with height defined in the attributes. When I choose height, the buildings get what seems to be an unlimited height in the map. When this is manually changed to a value of "0.0001-0.0003" it suddenly starts to resemble some realistic proportions. But I want these buildings to represent an actual scaled representation and not an subjective representation of the height.
The building vector layers height attributes are represented in meters and have been retrieved from OpenStreetMap @ QGIS 3.12.1. I can also say that the same problem occurs when I am creating new vector layers for buildings.
Is there a way to change some sort of a "reference scale"?
Any tips on how this might be fixed? I'm still learning, so even "the wrong solution" will most likely give me more knowledge in the field of cartography.