Can we get some clarification on the performance regressions in Android Nougat?

Several devs have spoken about this issue, such as the Daedalus team and Chris Pruett. Phones that upgraded from Android Marshmallow to Nougat experience performance regressions. I recall someone said that it was due to the GPU driver that comes with the OS.

Can anyone clarify this observation? Can devs or users do anything about the regression? Is Oculus/Samsung working on a solution?