Rockstar game's graphics are being improved by the community.
Modder xoxor4d recently introduced update 1.1.5 for his RTX remaster of Grand Theft Auto IV. He continues to gradually improve the graphics.
The developer has fixed rain particles. In addition, he has refined some models, wood and glass, as well as metal surfaces of taxis.
Previously, a comparison of the graphics of the RTX remaster of GTA IV with the original game was conducted online:
xoxor4d distributes the project «gta4-rtx (GTAIV RTX Remix Compatibility Mod)» via GitHub.