it is a pain in the ass that you need to download a total of 3gb to have the bitcoin core though you have a turtle internet what a shame maybe developers out there could manage to have a bit internal of the memory to support many person to download such a thing! we can minimize the GB but not affecting the system and performance and others!
3GB? I hope you're not talking about the 145GB blockchain.

i think 3GB is not that big. I think you need to uninstall unimportant files to accomodate the storage of upgrade bitcoin core. Anyway, the upgrade bitcoin core is such a help for everyones performance.