Lollipop Roms drop connection when screen turns off

I recently tried to upgrade to CM 12.1 for my T Mobile S4 being used on the Wind Network in Canada. But when ever the screen turns off it will lose connection to the cellular network, when i turn it back on i get a bunch of notifications, sometimes it will buzz 2 or 3 times for the same notification. I tried searching but can't find anything pertaining to this. i also tried other builds, Slim LP, Resurrection and the GPE but still all show the same issue

Has anyone seen this before let alone know how to fix it?