[Q] usable roms for studying

Hello everybody

Ive a p7510 wifi tablet since 3 years, these last months ive been suffering from delays and problems when trying to read and operate pdfs. Im thinking about the possibility to downgrade my tablet to honeycomb, but i dont know if that will solve the problem.

The main uses for my tablet are
Display pdfs (repligo)
Sync dropbox (dropsync)
Minor video visualization (mx player)
Remote vnc (remotix)
Music while studying (spotify), altough not needed

Is there any fast or stripped and basic rom?

Thanks