### I have no problem with portal 2 at all it runs perfect but when I use some custom maps I get lag in portalgun movements not in fps drop its like shaking
otherwise other custom maps runs normally.
{Video} http://youtu.be/4e3iPn2feVI

hmmm... must be scared...

I have sometimes same think. I think that is caused by big maps whit lots of stuff and a few portals( i dont know their right name but their affect is that your game dosent render if stuff behind it unless you are looking at it) and its simply an animation lag.

I think its caused by low fps, sometimes I'm getting same problem while playing in high detailed but less optimized levels.

Hey Makadi!

I've thought a new possible reason for your problem. Are you using a wireless mouse/keyboard? beecause this, altogether with a not-well-optimized level, could cause a rendering flow drop.

Anyway as I told you in steam, I really think it has to be related to the "Anti-aliasing" and "Filtering" effects settings: it is a rough rendering of the movements (non smooth movements), that only appears when a map is big or it's not optimized and rendering process is busy with the rest of the map consuming your system resources...

Try setting those 2 parameters up to 4x and check if it still happens. Anyway, "Anti-aliasing" is only for making smoother the "teeth" made in shape's outlines, try also to put that "off" increasing the "filtering" value up to Anisotropic 16x for example...

Changed any mouse settings? Like VSync?

josepezdj wrote:
Try setting those 2 parameters up to 4x and check if it still happens. Anyway, "Anti-aliasing" is only for making smoother the "teeth" made in shape's outlines, try also to put that "off" increasing the "filtering" value up to Anisotropic 16x for example...

yes this try reduced the rough movements in some maps a littile but I still had the same problem with no difference other maps specially in maps with lasers