App unreliably loads when deployed. No log errors.

When I deployed my app it only loads under certain connections. It's a larger app.

Loads better on Internet Explorer on my remote server. Some folks in my office found it loads with Edge.

I've read the help files and messed with the startup timeout time.

I'm wondering if going to the paid version would help with the "performance boost" option? Or is there another way to get it to more reliably load?

This app is only for internal development and isn't accessed by multiple people at a time.

Did you try to profile your code to see where bottlenecks are? Take a look here for inspiration -