You could try RealizmIV. It supposedly has better textures at better framerates. CLICK HERE
to get it. Unless you are running an ENB setup, in which case you should not use a full install of Realizm IV, although you can use some of the textures if you wish.
Other than that, lower the view distance, detail distance, vehicle density and shadow density settings (especially view distance and shadow density, these two have a huge impact on performance). If you are running an ENB setup, you might try running with Ambient Occlusion Off, just edit the enbseries.ini/iceconfig.ini
and switch EnableAmbientOcclusion
. If the ENB setup you are using came with Anti Aliasing turned on and you are running at a high resolution, try turning this down or off altogether. The settings in enbseries.ini/iceconfig.ini
for this are ForceAntiAliasing
(set to false
to turn off) and AntiAliasingUpscale
(set it to 0.87
for a performance boost if anti aliasing is on).
If you still can't get performance you are happy with, maybe you should uninstall a few mods. Unfortunately, all these cool mods, especially enb mods, increase the performance requirements of GTA IV somewhat. Nearly all mods give you higher polly models, better pixel shaders etc. and this is always going to cost you in terms of performance.