For anyone that is interested, came across a leaked stock JB FK09 build that runs like butter. It has stock recovery, and is designed for sprint (so there's sprint bloat on it as opposed to boost), but is rooted so you can just TiBu all your apps. Installation is easy, just d/l the appropriate file, double click to extract, then run the one-click. Reboot to download mode, then connect the phone to the pc, then hit start on the one-click and you should be all set.
I can also confirm that for anyone interested in JB but not wanting to switch because the 4g speeds get borked on a custom kernel, 4g speeds are NOT throttled on this build. I get 8mbps down on this rom, which makes sense because the kernel is stock.
Source
ETA: I will say some people have reported a call muting bug where either they cannot hear the other person or the other person cannot hear them. I have not had this issue personally.
The only issue I have found is that when I made a phone call the screen would go black and I'd have to do a battery pull to reset it. I figured out this was because there's an issue in the ROM with contact pictures. To fix, just disable syncing of contacts with your Google account and d/l Contact Picture Remover from the play store, and then you should be all set (minus contact pictures).
I can also confirm that for anyone interested in JB but not wanting to switch because the 4g speeds get borked on a custom kernel, 4g speeds are NOT throttled on this build. I get 8mbps down on this rom, which makes sense because the kernel is stock.
Source
ETA: I will say some people have reported a call muting bug where either they cannot hear the other person or the other person cannot hear them. I have not had this issue personally.
The only issue I have found is that when I made a phone call the screen would go black and I'd have to do a battery pull to reset it. I figured out this was because there's an issue in the ROM with contact pictures. To fix, just disable syncing of contacts with your Google account and d/l Contact Picture Remover from the play store, and then you should be all set (minus contact pictures).