audio stuttering/skipping HELP!

I'm currently on stock 4.4.2 ROM on T-Mobile for my Samsung Galaxy S5 device and have been getting some rather annoying stuttering/skipping while listening to audio. My current player of choice is GMMP and have tried Rocket Player, Neutron, and doubleTwist... I've removed any use of equalizers and have cranked up buffer settings in all the players I've tried, but no dice. the stuttering happens randomly across my selection of MP3s and I can't figure out why! I've tried moving the files to the internal SD for faster access, but no luck. I've cranked up the read ahead on the SD reads, no change. The only thing I notice is that if I leave the screen on constantly then it plays stutter-free! Leaving the screen on in this manner is a waste of battery and raises the temp unnecessarily especially given that other S5 owners don't seem to have this problem. I've tried wiping my device, but that did not fix it. Anyone have any suggestions? Hoping to be able to tweak some kernel settings to fix this if needed!

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