Output Blanking Transitions Issue

Can anyone help?
When I use transitions such as spin or whip zoom. The output blanking is included in the transition effect.
Is there any way to disable this? I just want my blanking to stay put.

It is actually not an output blanking issue, but to do with the fact that I'm using 4K DCI on the 1080 timeline.
Does anyone know the dimensions I need to use instead of 1920x1080 to remove the top and bottom of the black lines? Obviously using 4KDCI works, but my computer is not up for the task.

Figured it out. Just set timeline to HD and set image scaling to crop