The main reason it's because you have extract 20 Gb of files from 2 zip files and after that if you produce a diff of an archive of 6 Gb with only 1 files modified, you have to download a diff patch of 6GB...
So, to reduce the size you have to extract all *.rpa via unren, another 20 GB.
And after 40 GB, you can use the diff = Time to do the job without archive ~1 h with a high usage of disk. and CPU..
I've tried, but too much files to delete from 1.0b to have a clean update by diff.
For the Linda night scene bug just open the console (first you need to enable it with unren.bat).
Then type (or paste) the following code (copy and paste all of it):
Requested quick Mod with some more game settings
(named saves/textsize/textbox/QuickMenu) + cheating the money
Info: only tested with the new game version v1.0c!
Edit Oct. 6, 2023:
On PC my Mod is now also fully compatible with the incest Mod from here (thanks to joelurmel for adding that into his Mod) Nov. 4, 2023:
my Mod v1.0c seems to be compatible with the new game version v1.0e, too.
Download Mod v1.0c (~1MB)
(compatible to game v1.0d and v1.0e)
Info:
I tried an Android port for the game with my cheat Mod,
the gallery unlocker from here and the incest Mod from here.
But be aware I only did a quick try for it, and the game is actually designed for PC use.
I recommend to activate the "Skip Minigames" in the Preferences for Android.
Attention:
You still need the patch.rpy from lewdpatcher (the uncensor patch linked on the main page)
and put it into the following folder on your phone/tablet: "(your device)\RenPy_Saves\com.koga3.milfycity\game\"
Android port from the game compressed v1.0e
with integrated Mods (~1.2GB)