This has already been announced a long time ago (Deprecating Legacy CSG System), but it’s finally time to let go of the legacy CSG system (CSG V1).
After March 31, you will no longer have access to our legacy CSG V1 system and we will automatically switch you over to the new system when you launch Roblox Studio. Any new operation or edit to an existing CSG part will use either V2 or V3 engine. However, we will not be modifying any existing, published places that contain CSG V1 models.
We recommend that you upgrade to CSG V3 as soon as possible and to let us know if there are any issues which prevent you from using CSG V2 or V3.
Here is a list of a few pain points that were already reported:
Color Transfer of Negated Part - CSG V3 has now the same behavior as the legacy CSG V1 system.
Smooth Edges - with the smoothing angle feature, CSG V2 and V3 can be used to model smooth objects.
Performances - we’re working hard to provide you a new engine, CSG V3, which has better performance. Try it out!
We welcome any feedback and will strive to make that transition as smooth as possible.
- Nothing. Published models won’t be modified.
- You should upgrade to CSG V3 as soon as possible. If there are any issues that prevent you from using either the default CSG engine (CSG V2) or the latest one (CSG V3), please let us know. Attach a model when possible so that we can reproduce the issues.