Cpu Throttling + Graphical Lag

[xenapan]

I've got my settings on lowest (cause I have a fairly old graphics card, 4gb ram only and a quad core) but it seems to be causing graphical lag BETWEEN waves (I'm currently playing the Galeta infested defense alert on solo  - so it has nothing to do with other players.. I'm obviously hosting myself.)

 

Funny thing is.. The lag is BETWEEN waves, my CPU usage drops to about 14%-17% and my FPS (im running fraps) drops to about 19. When the waves are coming and enemies are here and fighting my cpu usage increases and my FPS goes back UP to 35-49 range.

 

Between waves: 19-20 fps - CPU Usage 14-17%.

DURING waves (with enemies/using abilities) 35-49 fps, CPU usage 20-30%

 

So it seems like the game is throttling my CPU usage (not sure if its my settings) between waves for some reason which is causing all sorts of graphical lag.

Edited June 21, 2013 by xenapan