A faster way to cycle up/down when adjusting viewports in menu?

I do a lot of adjusting of aspect ratios and viewports for different games and configurations and I sometimes have to go from something like 1080 to 3440. It takes a long time to this this with the cursor keys. I know I can just edit the retroarch.cfg files manually but I like to do it on the fly with the game paused and running in the background so I have a visual cue of my adjustments. Is there a quicker way or a shortcut to cycle up/down?