I flashed some roms and in some cases I noticed a huge lag after the boot process, with a duration of 1/2 minutes.
I already installed:
* SlimKat (this one was perfect, no lag in any moment).
* C-Rom (Had a huge lag after boot, duration of 1/2 minutes and after that back to normal).
* Carbon Rom (The same thing, huge lag after boot and back to normal in 1/2 minutes).
I'm using a XT1033 (Dual Sim) with GPE stock rom, so I could flash these roms.
If you need more infos just ask me