Add section about the impact of "--skip-references"

Author: SkowronskiAndrew

UnityDataTool/Commands/analyze.md

@@ -112,3 +112,23 @@ These errors occur when the same serialized file name appears in multiple source
 
 See [Comparing Builds](../../Documentation/comparing-builds.md) for strategies to compare different versions of builds.
 
+### Slow Analyze times and big database
+
+Consider using the `--skip-references` argument.
+
+As an example of how big a difference this casen make: one large Addressables project took 208 seconds and producted a 500MB database.
+With --skip-references the same analyze call took 9 seconds and produced a 68 MB file.
+
+The references are not needed for core asset inventory and size information. 
+
+When specifying --skip-reference some functionality is lost:
+
+* the `find-refs` command will not work
+* `view_material_shader_refs` and `view_material_texture_refs` will be empty
+* Queries that look at the relationship between objects will not work.  For example the refs table is required to link between a `MonoBehaviour` and its `MonoScript`.
+* The `objects.crc32` column will be NULL/0 for all objects. This means:
+  * No detection of identical objects by content hash (See [Comparing Builds](../../Documentation/comparing-builds.md))
+  * The `view_potential_duplicates` view relies partially on CRC32 to distinguish true duplicates
+
+Future work: The refs table could be made smaller and more efficient.  It might also be prudent to control the CRC32 calculation using an independent flag.
+