GTA IV Laggy with jaggy line on decent rig?

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TechLovie

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Jan 11, 2016
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Hey!
So im having this weird issue where GTA IV isn't running as i expect. Like it has jaggy lines everywhere, and i have turned on Anti Aliasing to x16 and still. The game lags little sometime too. No mods installed. My specs are below: Any help will be appreciated! Thanks!

Core2Quad q6600
8GB Ram
Asus radeon hd 6850
Game installed on sandisk z400s ssd 128gb
Screen res: 1280x1024
 
Solution
Supernova1138


If I were to guess, it would be the Xbox 360 version had some sort of post processing blur effect put in place to smooth out the edges that is missing in the PC version for some reason. I haven't used Catalyst Control Center in a long time, so I don't know if they've changed it, but under 3D Application settings there should be an Anti Aliasing option. You can try to override the application setting and force a certain level of AA, but I found that didn't work very often back when I had a 6000 series Radeon card. You can try Morphological Filtering, which should be a checkbox under...
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Supernova1138

Supernova1138

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Mar 22, 2011
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GTA IV doesn't have anti aliasing at all, what's set to x16 is Anisatropic Filtering. You have to try to force AA with your graphics driver control panel, and I don't think that works that great with AMD cards, though Morphological Anti Aliasing should work. VSR would be another option, but you'd need a newer AMD card for that to work.

As for performance, that's about what you'd expect, the game is terribly optimized and doesn't run that great on anything. Even with the latest GPUs you're likely to have trouble maintaining a constant 60 FPS. The game is also very heavily CPU bound, and your old Q6600 might not be helping matters.
 
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Supernova1138

Supernova1138

Illustrious
Mar 22, 2011
5,340
54
37,690


If I were to guess, it would be the Xbox 360 version had some sort of post processing blur effect put in place to smooth out the edges that is missing in the PC version for some reason. I haven't used Catalyst Control Center in a long time, so I don't know if they've changed it, but under 3D Application settings there should be an Anti Aliasing option. You can try to override the application setting and force a certain level of AA, but I found that didn't work very often back when I had a 6000 series Radeon card. You can try Morphological Filtering, which should be a checkbox under your 3D Application settings.
 
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Solution
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TechLovie

Reputable
Jan 11, 2016
44
0
4,530
Thanks! That helped a bit! not with the lag (need a new cpu for that), but the jaggy lines :D



 
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