[Verizon Samsung Galaxy S III] AyUaxe:
Sorry dkp isn't working so well for you. One possible reason could be voltages. I think (maybe verify on [MENTION=2609079]Decimalman's[/MENTION] kernel playground) that d2 is a little unusual, in that it's more stable, at least for most clock speeds, undervolted. Flashing dkp-vmin-800.zip to set min voltage to 800 has become rote. My bad for not mentioning that earlier. All that said, I've always had good results with dkp--maybe my device (an early release through VZW) just happens to have that certain chip production run that matches with dkp's code.

Re factory reset, I think it was more the system wipe than factory reset that smoothed things out. I'd done resets before and still had problems w/ CM13 and AICP, with and without dkp. I'm not sure what would happen if one just wiped system, caches, then flashed rom, gapps, kernel/vmin, leaving data intact--might be worth a try after a "last known good" backup. Re alt kernels, I don't know of anything else currently for I535. Long ago (like on KK) [MENTION=1045701]lordbo[/MENTION]effla's kernel worked, but it's really for I9300, so dubious stability and may not even boot. I think [MENTION=4325945]ktoonsez[/MENTION] kernel, kt747 faded in late 2015 or so. Someone was talking about building on dkp and consulting [MENTION=3639717]Perseus[/MENTION], who took up kt747, but that branch never seemed to take off.

Maybe this is a good time to re-urge my old pleas to [MENTION=2385005]invisiblek[/MENTION] and [MENTION=2044079]Nardholio[/MENTION] to open up the kernel in the CM nightlies to tweaking. I understand the desire to keep the rom as universally useful and stable as possible, but jeez louise, we're already way, way outside warranty on this device and anyone still hanging in probably has a clue (most more than me). Under and overclocking and io settings alone can make a significant difference in performance and battery life with new roms and apps pushing the lil d2 that could to its limits. I'm sure [MENTION=4932679]decimalman[/MENTION] would be pleased if his code was merged (with attribution) and updated.

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I went to a Droid Turbo (aka xt1254 or Quark) b/c got a good deal (<$200, unlocked). Big battery but no SD card, which is a PITA. My understanding is the Droid Turbo II has an external SD slot. Worth some research. Definitely want to be sure there's a way to unlock the bootloader/root and some decent rom development. Unbelievable how much VZW carp was on the Quark, though the stock rom isn't bad. 4 or 5 "Quark" devices are marketed under different names worldwide, but have virtually identical hardware (there's guidance on a Quark dev forum to determine which of the Quark family is really the best device--it's not the Turbo). It reminds me of the huge distribution of d2s. There is a dynamic and notably international development community on xda (@Skrilax_CZ, [MENTION=5747496]baybutcher27[/MENTION] etc.). Was considering the Project Fi option (stuck with VZW due to family plan)--they have a deal to let you buy a 6p or 5x with monthly payments. I like that the phones are, afaik, dual sim. Dual sim and external sd card are features I wanted, but wasn't willing to pay the extra cost of, at least not now, with VZW compatibility. Unlockable bootloader was more important.

Apple mantra: "Do not attempt to adjust the picture. We are controlling transmission. If we wish to make it louder, we will bring up the volume. If we wish to make it softer, we will tune it to a whisper. We will control the horizontal. We will control the vertical. We can roll the image, make it flutter. We can change the focus to a soft blur or sharpen it to crystal clarity. For the next hour, sit quietly and we will control all that you see and hear." [h/t The Outer Limits] So yeah, really just don't go there.