How much does pop outs affect your FPS?

If anyone is using an external monitor to display a pop out of the G1000 PFD l, how much does this affect your performance?

Im looking into this and see a lot of people doing it but I don’t really want to take a big hit on FPS. I really want to utilise my main and only monitor for as much window space as possible. I find that the cockpit takes up far too much space.

Sitting on the runway, looking straight ahead with everything on Ultra (LOD on 200) @4K. I go from 58FPS to 34 as soon as I pop out the PFD and MFD on the C172 G1000.

I also go from high 50’s low 60’s down to low thirties but often will come back up to high 30’s low 40’s once airborne. Additional popouts do not worsen the condition.