Recording a PowerPoint and Video

When I share a PowerPoint during a Zoom Meeting, I want the PowerPoint to take up 50% of the screen and my Zoom video talking about the PowerPoint to take up the other 50% of the screen.
I am able to achieve this by repositioning the frames, however, when I record the meeting and preview the recording, the PowerPoint is larger and my video in much smaller and in the upper right hand corner.

I have enabled Side-by-Side mode, but still no luck.

Does anyone know how to record a PowerPoint and the speaker video in a true side-by-side mode?