III.VC.SA.IV.Project2DFX VS GTAIV.EFLC.FusionFix

2DFX https://github.com/ThirteenAG/III.VC.SA.IV.Project2DFX/releases/tag/gtaiv

Project2DFX: LOD lights make the city appear more alive at night https://thirteenag.github.io/p2dfx

Project2DFX (Images speak for themselves. Comes with a configuration file. Highly recommend changing some stuff. Here is a tutorial for it.)

Combine 2DFX then now the graphics age well for a 2005 game

For graphics mods, use 2DFXand SkyGFX

For higher res and better visuals and audio than console, the quickest way to get the PC version working with minimal modding is the current Steam version, FusionFix, GTA IV music downgrader — this downgrader only restores cut music and doesn't downgrade the .exe version — and Project2DFX to give the city distant LOD lights like in GTAV.

I highly recommend using the newest version of ThirteenAG‘s Fusion Fix. It offers options to completely disable the green/orange tint, enables console gamma (less washed out colors), and also gives you the option to enable FXAA. Everything is neatly incorporated into the game‘s menus and works flawlessly with the latest version of GTA IV, no downgrade required.

for the best gta 4 experience, make sure to install fusion fix and the visual mod that restores the console look (including the correct gamma setting)

Highly recommend this for more fixes and a modloader https://github.com/ThirteenAG/GTAIV.EFLC.FusionFix

I use Rivatuner statistics server. It's an app that can limit FPS and has an overlay for games where it shows FPS in corner. It can limit FPS to 1 if you want to. I'd recommend you to install FusionFix since it fixes a lot of issues related to FPS as well as some cutscene tweaks which might fix your issue. https://github.com/ThirteenAG/GTAIV.EFLC.FusionFix