Our company uses Balsamiq Mockups but I find the app annoyingly slow. I recently upgraded to 3.5.5 for desktop (Windows) but it seems nothing has changed over the years. I dont consider my Mockups to be large. My project contains 7 mockups and each mockup contains about 6 dialog designs. The app is just really laggy for anything other than a very simple design. Being a software development company “simple” is just unrealistic when it comes to designing enterprise level software.
To give you an example: When I have a mockup open (with 6 dialog designs on that mockup) and I try to activate an item to change its text it takes about 1-2 seconds to activate. Task Manager is showing about 300MB of memory used by Balsamiq (seems reasonable) and I have an i7 quad core processor with 16GB RAM with a SSD drive. This should be more than enough for what i’m trying to design in Balsamiq.
I can only come to one of two conclusions: 1) Either the app is designed badly or 2) Adobe Air isnt the best platform to build Balsamiq on. I run several applications on this machine that do way more complex things a lot faster than Balsamiq can do.