: This update included early improvements to transitions between Story Mode and Online, which can slightly reduce load times even if you only play offline.
Unless you have a specific, irreplaceable mod for 1.26, updating to 1.41 (and likely beyond) is the best choice. You gain hundreds of hours of new vehicles, missions, and features. Update Gta V 1.26 To 1.41
: The addition of the "Formation Flying Assist" system and custom weapon adjustments. Direct Hardware & Platform Upgrade Methods : This update included early improvements to transitions
Ultimately, moving from GTA V 1.26 to 1.41 is a journey backward in time. It is an update that restores vintage content. Approach it carefully, respect the file integrity, and you will enjoy the golden age of smugglers and gunrunners without the bloat of modern GTA Online. : The addition of the "Formation Flying Assist"