I’ve noticed that when it comes to more complex scenes, the official version and the experimental version of 2.79 look noticeably different for some reason:
Here’s a scene rendered in 2.79b:
Here is that same scene, with the same settings in 2.79.7 (from 20.3.2019)
The most noteable difference is the reflection in the water, which is diffused and blurry in the old version, but completely sharp in the new one:
Other reflections look different as well:
Is there a known reason for this? Is this something that could be avoided by changing the settings?