Every time I modify my landscape it freezes for a few seconds after I release the left mouse button, and in the output log I get this message “LogTexture:Display: Building textures: Texture2D_923_BaseColor (BGRA8)”
I’m reporting it as a bug since I never had this in 4.7.6.
I checked around and I found what the Texture2D_923_BaseColor is. Landscape > Manage > Selection Tool and click on a component, there is a tab called “Baked Textures” “GI Baked Base Color Texture” and there is the Texture2D_923_BaseColor refereed.
Since the tool-tip said it had something to do with the Distance Field GI I figured it might have something to do with “Generate Mesh Distance Field” I went to Project Settings > Rendering > Lighting where the field for that is and I noticed something new called “Generate Landscape Real-time GI Data”. I unchecked that and the editor no longer freezes for a few seconds. I don’t even remember turning that thing on.
Ok that makes sense. Distance Field GI is still extremely experimental right now. There are several known memory leaks and lots of optimization issues with the system as a whole so having it on at present is not recommended in the least. There is a forum thread that Wright started on the state of DFGI that can be useful to get the most recent updates: