Localized....not really. 3 of my accounts are in Orillia, ON, and the other 2 are in Ottawa, ON. 3 of the accounts are experiencing issues again, but the other 2 are rarely used during peak times so they may simply not be seeing it.
FWIW, I replaced 4 of the 5 SIM cards PM sent me as part of their resolution plan, and in a single day, I haven't dropped a call, but I only made one call at peak time yesterday. I want to test more, but I unfortunately have better things to be doing than to sit on calls and aimlessly talk while awaiting the call to drop.