Alpha 6 is a great start, but for the most to be able to test it properly DO NOT install into the default location, change the install location to a folder or drive that you as the user have FULL write permissions, only then will you be able to test Alpha6 with assets etc..
This is a first test of the installer, its is nice clean and tidy, unfortunately Windows 10 security features are a total pain for developers, to make more difficult for malware writers and 'script kiddies' to cause harm windows 10 IO structure is very tight, i think the 'FILES' folder in its entirety needs to be moved to the users My Documents folder including all user editable INI files.
The best option would be to change the installer slightly to have 2 locations
'Program Directory' - usually Program File (x86)
'Data Directory' - usually 'USER' folder My Documents, My Pictures etc...
the default data directory could be \GameGuruApps\GameGuruMAX\ but also give a custom choice for the more 'tech savvy'
Most Local 'Home' drives (C:\) are SSD nowadays prices have come down but the most popular size is 240GB simply because of pricing, systems usually sold with a small SSD come with a secondary either mechanical drive or hybrid of at least 1TB the systems are usually setup with all 'Home' folders location set to the secondary drive (if the system was setup correctly) so the My Docs, My Pictures etc.. are usually setup on the larger drive.
People with the default location of C:\ (especially if it is a small SSD) are going to run out of space very quickly once they start downloading GB's of store assets and MegaPacks.
Also on another note, those that are getting CPU spikes it is a known problem it is being worked on and there is no need to keep reporting it , the issue is caused by a lot of 'non' visible objects that have been prepared for the particles system, its a culling method that needs to be refined.
Welcome to the real world!
Main PC - Windows 10 Pro x64 - Core i7-9700K @4.2GHz - 32GB DDR4 RAM - GeForce RTX 2070 SUPER 8GB - 1TB NVe SSD 2TB Hybrid Data Drive
Test PC - Windows 10 Pro x64 - Core i7-7700K @4.2GHz - 32GB DDR4 RAM - GeForce GTX 1060-6G 6GB - 1TB NVe SSD
Laptop - Helios 300 Predator - i7 7700HQ - 32GB - Nvidia GTX1060 6GB - 525GB M2 - 500 SSD - 17.3" IPS LED Panel - Windows 10 Pro x64
Various Tutorials by me