Try not to be biased in your response but I am trying to create an RPA in VBA and I am having hard time in figuring the best way to do the app so the UI doesn't get sluggish down the road (the more I add).

So, I had started creating User Control for a panel that fits the sidebar with a lot of buttons on it. But without having the app close and open new forms seems pretty slow at doing things. The only other option is having all the interactions with buttons in the one User Control/Form for it not to appear like it's closing and opening a new window. I simply want it to hide one Panel and Show another panel respective to the button one selects- without it opening and closing a window. I want it to appear in the same form without having all the methods and functions in the app all in one Class.

I hope that makes sense.