My game speed slow down

[top242011]

after i become billionaire my capitalism lab post release beta game speed is going to slow down
in first time of playing game speed from day to day is very fast ex: <10 real second for 1 month in game>
but after playing and the game have a lot of data my game speed is going slow down to <1 real time minute for 1 week in game>
pls. fix this
(sorry for my weak english, I'm Thai)
(I always playing game in x5 speed)

[David]

Please see the Tips for improving game running speed at: viewtopic.php?f=7&t=7200