Yeah, there are MUCH better ways to pull it off. For one thing, I get that you need ads to sustain your company and stuff, but once every few seconds is just ridiculous (and the fact that half of them are practically lag machines does NOT help). If you REALLY want the ad cash and not turn away your potential best customers, you COULD do something like this: First, lower the forced ad frequency (and maybe be a little more discerning with WHAT ads are shown); second, both upgrades are always given the option to be upgraded via ads free of charge; third, do controlled sponsorship events. What do I mean by that? Simple, really. During these events, forced ads are completely gone, but the arena is adorned with decor based on the sponsorship. Given the “inventive” nature of this game, Northrop Grumman, Design Squad, or, at the very least, the STEM unit of your local school would be a great start!
One other thing: Airplane mode. If you’ve read the more angry reviews, you probably know what I’m talking about.
Oh! I just remembered! High bullet quantities tend to lag you out for a little bit. For some reason it’s not as bad earlier in the game than later, but I dunno. Wouldn’t hurt to look into it.