IOS App Crash

So after further testing, the above is what I get when it crashes but this doesn't happen too often.  My app freezes which is something that seems to be happening more often (and maybe causing the crash?).  In the instance of the freeze, I get the exception code:

Exception Type:  00000020

Exception Codes: 0x000000008badf00d

Highlighted Thread:  0

Now I realize this looks like 'ate bad food' and that is what it means.  The error code is associated to Apple's watch dog for non responsive apps so the watch dog ate some bad food (my app) and decided my app was non responsive.  This seems to happen at random points with no clear indication of what code in my app could be triggering a non responsive UI.  The same code works fine in Android and windows so either iOS is stricter on apps or I do have some error.  Does anyone have any ideas on direction?  I can try commenting out sections of code but it takes over 5 minutes to compile my app and then random amount of time to trigger the error so this approach is not really ideal.  I can post the crash files if that will help but was hoping someone may have insight into troubleshooting ios logs.