As it has been said above, you should use some third-party sofftware to minimize jamp.
I use this, works perfectly:
JA Minimizer
Or you can use functionality built-in in MBII Launcher.
If you already use it and still experience problems, please start MBII Launcher, click Settings, check "Enable logging", click "Repair installation".
After repair will be completed, zip folder "Program Files\JediAcademy\GameData\MBII_Launcher\logs" and upload it here, or just post last log.