What if archives are not compressed?
With a slow hard disk it can take longer. Unless you have Windows Prefetch active with enough RAM.
Windows Prefetch must also recognize the files as frequently used.
If the files on an SSD(250MB/s read) or RAM disk are uncompressed, there is a small speed advantage.
I'm not sure if it works well with SSD since the "Intel Meltdown" patch.
The files are also partially compressed without an archive, mostly images.
https://en.wikipedia.org/wiki/Image_compressionIt would be possible to create a client that decodes everything at startup, then there would be no more load times.
The drawback is that it probably takes more than 4 gigabytes of ram.