Help OnePlus One became unusably slow overnight. Flash memory corrupted?

[IrrationalBanana]

Hi all!

I have been loving my OnePlus One and tweaking around with it as much as possible, learning the ropes from Apple to Android and I finally settled on CM13 about two months ago.

The phone was running fine until one day it started getting slower and slower by the minute. By the end of the day, it took me 5 seconds to unlock the screen and 10 seconds to do just about anything else with the phone (open app-drawer, settings, uninstall apps). Interesting thing was, when I booted up let's say Real Racing 3, the game ran just fine, absolutely no slowdown!

Fixing this phone has been a project of mine for quite some time, but I now feel as if it's a fruitless project. I can't find any suggestions online and am getting desperate

I have tried;

• Complete factory resets multiple times, and a TWRP Data, Cache, Dalvik clean
• Installing lightweight ROMs (SlimSaber, OxygenOS)
• Using TWRP's Format Data and removing the installed OS, installing CM13 again after that. Absolutely no use.
• Filling up all available memory and then emptying it, both manually and thru an App from the Play Store

Installing a clean ROM seemed to help the very first time I did it with OxygenOS, and then the phone slowed down about 10 minutes in. Now the phone is slow no matter what I do.

Any and all input/comments/suggestions are greatly appreciated!!!

 

[mikedt]

Could be an indication of that the internal flash memory is going bad. And there's not a lot you can do about that yourself. I presume the OnePlus One is out of warranty now.