Glad to know things are working out for you. First you’ll have to make sure that none of your images has source set to a Base64 string but is replaced with direct links.
Once you have ensured that, I don’t think you can do much more. Also, is your app large? How many forms does it have?
Because the more forms you have, the slower your app gets. Also, I’m not very sure about it but since every code you write is stored in your .yaml file, it might have an impact in loading time as well. So you’ll have to make strategies to reduce the code. Although of course it will have very little impact.