Appcode, in comparison to RubyMine or Intellij/Android Studio, performs badly, period. I still love the features and writing code in it, but the performance is such I literally cannot run this.
On a 2014 MBP 15 with 16GB RAM, it will drag my system to a crawl. On start after processing, the CPU will settle with RAM usage sitting about at 1GB. However after say 30 minutes of editing only, no running the app in AppCode, it spikes.
I just killed it this morning as it was non-stop using 30% CPU in the activity monitor. However, it was slowing the system down such I could barely move a window... as in 1 frame every 4 seconds, literally. Also RAM consumption was 1.6GB, but I've seen it as high as 2+GB.
It's feels like both a memory leak and a processing spin cycle causing something to churn.
I REALLY want to use app code with Xcode because Xcode editing makes my fingers hurt lol. But for now, I have to kill it. I cannot use the product in this state.