Hello KingCodebra,
Our most sincere apologies on the problem that you have encountered. We are already looking into the matter at hand and do our best to reduce the storage size of the game by further optimizing our development codes as well as assets.
Our game should be roughly around 4 GB, and we are wondering if that is the size of the game in your hardware? Aside from that, to further assist you in this problem, would you kindly share us how much storage space was taken by the game as well as how large is your storage space? A screenshot could help us evaluate the issue with more detail. Furthermore, could you screenshot the contents of the game folder so we can see if there are any thing else in it?
We also have a few solutions for that you may attempt to try out that may help you:
1. Check or diagnose if your external hard-disk or hard-drive is running well.
2. Use an external hard disk to store the game if it takes too much space in your internal hard-drive.
3. Storing the game files in another internal hard-drive if you have. Like instead of C drive, try storing in D drive and see if there are any changes.
4. Reinstalling the game.
Have a great day ahead!
Cheers~
Naophire