Issues with blur in 5.5 - Problems with engine scalability

Hello everyone. I recently changed the version of a project to 5.5. When rendering a level sequence with game override using the scalability of post processing in cinematic, the lens blur has the problems shown in the image.
I believe the problem is not the video card, since it worked perfectly in version 5.4.
Can anyone help me with this issue? Thanks in advance!

edit: I notice that if I use r.DOF.Gather.ResolutionDivisor 2, the problem is solved. But it do gathering pass at half resolution. There’s a way to do at full resolution?

Just replied to this in another thread, where some people have found some fixes.

ONE solution (not best for all but probably fine for this) is to turn off the Alpha Output in the Project Settings.