Default Skype bugs on Nexus 5

Hello everyone,

I've been having these issues with the latest version of Skype for quite a while and I'm not sure what appears to be causing them. Whenever I have a video conversation on Skype, the video stream tends to stop after a certain period of time and the only solution I've found so far is to close Skype and relaunch it. Also, sometimes Skype rings for a couple of minutes until I'm able to successfully establish a connection with the person I'm trying to call. I don't know if it's because Skype hasn't been very well optimized for KitKat version 4.4.2, but I suspect the camera mod that I have might be causing this. Do you think this is possible? Or do you have any other ideas?