So, for me the game got a bit faster in general. Parts that demand lots of loading and connection with the server (as coliseum and cript) are still slow and giving signs of eventual crash.
Most other parts are playable, not smooth, but playable. The game crashed only once at Challenge (where it was crashing every other time or more, before). But the thing is, from yesterday to today Boss Pit became unplayable, 100% of times I tried the game crashed and shut down.
Playing on Samsung S3, android 4.3, server 4.