I recently upgraded to 4.25, then migrated a perfectly working project that heavily relies on Gaussian blur to create a nice depth effect, and just noticed the functionality is gone. It was also working at a perfect 60 fps before on a moderate PC, so I have to agree with the following:
- A Boost in performance/quality over an easy straightforward solution does not seem beneficial, especially if you no longer have the option to choose between the 2 options
- RDG seems quite complicated to achieve such a simple task
- Removing such a heavily used technique with no easy alternative will surely be frustrating for many developers.