iOS games with random frame drops (including my game)
<p>I'm almost finishing my iOS game written in Swift + SpriteKit. </p>

<p>It's a quite simple game, 30-32 nodes at max. Only 1 thing has physics. The rest is a few animated clouds (around 6). The CPU usage is around 2-3% and max RAM usage of 75-80MB.</p>

<p>Including that I also get frame drops when changing from one scene to another. Why that could be?
(I'm pre-loading all the textures and sounds during game init, and not on the scenes)</p>

<p>When I use the simulator for 5S up to 6S Plus, I don't see any frame drop in there. So that's weird. Looks like it's not my game but my iPhone 6S?</p>

<p>Now, I do also have other games installed on the same device from different developers, and I frequently get random frame drops too. Lags for 2-3 seconds and then comes back to 60fps.</p>

<p>Does anyone know if this is something that's happening after an X iOS update ? or I was even thinking this my be some kind of background service running that's killing my phone. Call it facebook, whatsapp, messenger, etc.</p>

<p>Is there any way I could possibly check on what's going on?</p>