Intro:
Be sure to grab the latest version of 7zip here before proceeding. I've tested multiple settings and I've determined the below settings are the best, compression wise.
These settings will require large amounts of ram. I've tested this with 64gb and 144gb of system memory.
The settings below are a screenshot from v22.01 (2022-07-15).
Settings:
Copy the settings as seen in the photo below for the best compression ratio.
Conclusion:
The above settings will compress a 930mb file down to 175mb. The files tested were a Windows installer, text files, and PNG images.
A solid block size is what's lowering the overall file size. You can read more about it here.
Keep in mind the compression will be horrible if uncompressed audio or video files are selected.
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