You Must be suffering from-
Not much free RAM,
Slow net speed... and...Blah.. Blah..Blah.
Here's the solution...
BRAVIA engine 3 for superb screen quality...
Lots of init.d tweaks to boost performance at every boot...
Some useful build.prop tweaks
Net speed increment tweaks.
1.Boot into recovery
2.Just flash the zip
3.Do 'Fix Permissions' in advanced > fix permissions (If it takes too much time for your device, please don't do)
After reboot, open 'Terminal Emulator' and type 'su' and press enter to run scrips as root...
Type 'mtkmod'and press enter to run the script...
Wait untill the script does it work and phone reboots..
Now you're done!
If you don't have init.d support on your kernel, visit here
Zip is attached to the post
Tested on ICS and JB. May not work on Gingerbread.
My thanks to-
YOU ARE FREE TO ADD THIS IN YOUR ROM...BUT WITH PROPER CREDITS
Please hit thanks if I helped you...
I'm not responsible for anything that happens to your device. Its always better to have a nandroid backup in case.