Augmentarium

Running great, getting 15 fps doesn't matter low or high settings, but if played in compatibility mode in resolution 640x480 then getting 30 fps.

Configure game

Goto C:\Program Files\LIMBO
In main Limbo folder should be
settings.txt
Open it in notepad and edit next lines:
use8bitrender = true
use30hz = true

To get 30 FPS
Right-click Limbo shortcut and select Properties
Under Compatibility tab select Run in 640x480 screen resolution