I'm using GT-I9505 "international" with Paranoid Android 4.45 and successfully installed Ktoonsez kernel (3.4.94) with flashify app using Philztouch cwm recovery.
No problems at all, everything works, not tweaking by KTweaker, just raised 2.2GHz from PA's processor settings, ondemand as processor governor and Noop on i/o scheduler.
Tried few KTweaker profiles first but didn't find any good what understands to drop processor on deep sleep mode, almost all keeps it running all the time, PA's own handling with freshly installed KT-SGS4 kernel did best job for me.
Testing with profiles was frustrating thing, there wasn't way back to same situation what I got on fresh install.. few PA flashes later stand on "default".
Props to KToonsez (kernel), Christian Göllner (Flashify) and Paranoid Android.