Multicam clip views are small

[PosadaPhotography]

Hey guys...new PP2021 user. I shot a music performance using 2 GoPro 9's at 4k. The clips look good. However, when I create a multicam sequence, all is good except they appear very small in the program monitor.  I'm sure there is a setting somewhere to make the project "4K ready", but like I said, I'm pretty new and this is the first time I'm using 4k and not 1080.  Thanks 

[PosadaPhotography]

So, guys...in looking into this further, the issue is not what I thought. Background..I shot with 2 GoPro cameras and just let them run. One tine during the session, I stopped each one to change the battery, then resumed recording, for a total; of about 2 hours. When I changed the batteries, I did this staggered so I'd have at least one of the cameras captuing everything. However, after going through the multicam process, I get 23 cameras and the camera clips will jump from camera to camera. Has anyone ever seen this before and how do I get this down to two camera clips? The ttached clip shows what I see. Thanks.