The Crucial BX200 is starting to have the issue, its TLC as well. I wonder if Crucial is gonna be like "psst, hey Samsung, how'd you fix that ish??" http://forums.anandtech.com/showthread.php?t=2467748
That looks a lot more like typical read look-up slow down as the FTL increases in size. It also looks like he has been adding data to the drive over the tests, which would explain the further slow down.
Edited by malventano - 6/8/16 at 1:45pm