Need help with VoIP Apps Crashing

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http://forums.androidcentral.com – So I have Paranoid Android 4.3 on my S3. Everything has been perfect for about a month or so until a few days back where Skype started crashing on me. It only crashes when I get into another app. If I stay in Skype it keeps working, so I figured that Skype was broken, and I switched to Viber to try it out, turns out the same thing happens. I have no idea what's going on but it only happens with these kind of apps, it is so annoying that I can't be doing anything else while I'm on a call. I figured the problem is probably on my end but first, I would like to hear your suggestions, thank you! I (HowTos)