Ubuntu 12.04 (Or JDK7u4)

Ever since I upgraded to Ubuntu Precise Pangolin (12.04 LTS) and JDK 7 Update 4,
I've seen that the TPS can get to ~4 or lower after previously having a perfect 20 or a 19.3.

Is anyone else having problems with this setup or know a way to maybe fix/improve the cpus load?

(Already removed ~ 7 plugins and messed around with launch params)

 

It seems that 12.04 is causing the problems, Any possible fix?

 

Debian 6.

 

Downgrade to 10.04 it gets ~42 FPS on my HP mini netbook

 

TPS = Ticks per second, FPS = Frames per second, TPS can max. be 20

 

no TPS is supposed to be 20 (not above or below), however it can possibly go both ways

 

But thats not what I meant

 

Yeah, I was getting 20TPS until ~40 players,
And I think 12.04 screwed with that.

 

I haven't seen the move from 11.10 to 12.04 change anything for me in terms of performance