The reason this is being asked is because the PC port for GTA IV was notoriously broken. There is a popular set of patches and mods that will improve that and I know they come bundled in the fit girl repack but it's one of the ones that won't play nice with WINE during installation.
It runs fine on the Deck. I suspect Proton is the difference, as it's much better tuned for gaming vs. stock Wine.
It's not an FPS problem, it's a visual fidelity problem stemming from a bad port.
The reason this is being asked is because the PC port for GTA IV was notoriously broken. There is a popular set of patches and mods that will improve that and I know they come bundled in the fit girl repack but it's one of the ones that won't play nice with WINE during installation.
It runs fine on the Deck. I suspect Proton is the difference, as it's much better tuned for gaming vs. stock Wine.
It's not an FPS problem, it's a visual fidelity problem stemming from a bad port.