Complex sentence: Unfortunately, the 3D Rage's limited 3D-performance impacted the game's motion severely--with all rendering enhancements enabled, combat with multiple on-screen targets often slowed to a slideshow.
Split into simpler sentences: Unfortunately, the 3D Rage's limited 3D-performance impacted the game's motion severely. With all rendering enhancements enabled, combat with multiple on-screen targets often slowed to a slideshow.