I finished a personal portfolio piece yesterday and was going to spend today finalising renders, but saw there was a UE5 update so proceeded with that first (assuming that it would just be bug fixes).
Upon opening my scene the lighting is clearly completely different, so I rebuild my data with no change, fiddle with post process settings until I realise that the default Global Illumination setting has changed and the previous default is now marked as deprecated. The new lighting looks horrible and has changed my scene completely,
Why such a big change would occur between preview versions is a mystery to me. But is there any way to revert to or redownload the UE5 Preview 1 build? There are 4 UE5 versions on GitHub but none of them are the version I’m after as far as I can tell.
Always back up your work and or run a copy on any new version of the build to test it first to see if you want to keep it. You might be able to totally uninstall all versions of 5 and try to load your project but I highly doubt this will work like 99% sure it will not. You are basically being a field tester when you should be just getting your project done right? If you have a back up of that works in 5 that is safe to use - don’t ever expect the engines lighting to be the same version to version I have had to relight my game over and over for every version going back to 4.12 so now I just do a test first see what happens and decide if I want to move over yet and bite the bullet. They are trying to lock that code down for the end of the year November and they will all disappear until February. So expect big changes as they race towards the finish line for the year.