By the way if anyone is interested here's the link to the Rogers forum with users complaining about the same problem - I'm just surprised not many have noticed it here compared to Rogers customershttp://communityforums.rogers.com/t5/forums/forumtopic...
I stumbled across this issue first on the Rogers forums and it seems like a problem with the 5.1.1 patch. The only "reliable" solution I've come across so far is to drop from LTE down to 4G (yes I'm aware it's a horrible solution).