Very Slow/Inconsistent Notifications

Hi, so the simplest way of stating my problem is when my device is either unlocked (AKA browsing apps and whatnot with the screen on), or locked (sleeping), notifications are slow to arrive. Right now I've been testing with Skype, and Gmail, both of which are inconsistent. My OPO does not currently have a SIM card (haven't setup the plan yet), and I've tried with both LTE and Radio off (using *#*#4636#*#* on the phone info page)

Info about my OPO/Setup:

• Flashed CyanogenMod 12.1 as stated in the Sultan thread before flashing Sultanxda Rom


• Using Sultanxda Unofficial CyanogenMod 12.1 Sep 14, 2015 (http://forum.xda-developers.com/onep...-12-1-t3120259)


• Using AK v.020 CAF Kernel (http://forum.xda-developers.com/onep...el-ak-t3189886)


• Using StyloKing v1 Synapse profile for CAF (http://forum.xda-developers.com/onep...8#post62600798)


• Using build.prop mods (http://forum.xda-developers.com/onep...evice-t3168207)


• Using TK Gapps Pico (http://forum.xda-developers.com/andr...gapps-t3116347)


• Using Oxygen OS Modem ONLY (http://forum.xda-developers.com/onep...xygen-t3072516)


• Using Xposed for Lolipop (http://forum.xda-developers.com/show....php?t=3034811)


• Using Greenify and Amplify with settings from both of these threads (http://forum.xda-developers.com/andr...stock-t2973588 & http://forum.xda-developers.com/andr...-life-t3095884)


• My OPO does not currently have a SIM card (haven't setup the plan yet)

Things I've tried:

• With both LTE and Radio off (using *#*#4636#*#* on the phone info page)


• Older Skype versions


• Push Notification Fixer (https://play.google.com/store/apps/d...ushfixer&hl=en)


• Disabling Amplify by disabling the module in Xposed, and rebooting


• Double checked that Greenify isn't touching Skype or anything related

I also have a Samsung Galaxy S3 that is using the stock ROM (Android 4.1.2) with root permission and a custom recovery. That is the device I've been using to test with. If I send a Skype or Gmail message from my OPO to the Galaxy, it takes 2-3 seconds EVERY TIME consistently.

If I send a Skype or Gmail message from the Galaxy to the OPO, sometimes I'll get the message within 3-5 seconds, other times it takes 1 minute+ and even a few messages don't arrive until I unlock the device and open Skype or Gmail.

When I leave Skype open, and lock my OPO, it seems to get the messages very quickly almost every time.

I've run out of ideas short of trying a full wipe and different rom/kernel/who knows what at this point...=\

Any/all help is greatly appreciated. Thanks.