[Q] Need advice : Stock & custom I/O performance topic

Hi,

I played with many Nexus S. I had one when they were new and my memory is that it was a good phone. Since then, I've played with 3-4 of them and every time, they were so slow, having lags of almost a minute on many touch of button. I've used Quadrant benchmark and everytime, I see that everything is normal except I/O. I've read many thread about that and they suggest that it has something to do with kernel. (most of the phone I used were using CyanogenMod, an OS I used since the beginning with almost all my phones (I have had a lot of them and always play with alternatives OS)).

My current phone died and I took back an old Nexus S and it is so frustrating to experience all those lags. I returned it back to Stock (official 4.1.2 image from google). I only flashed a recovery and rooted the phone after. What was my surprise to experience major lags and run the benchmark and see that I/O performance are still so low.

How are you living with your phone ? Is it fixable ?

Thanks to read me.

Looking forward to read from you guys