Only one core used on Windows Server 2019

[Civitello]

Description of issue: When using Windows Server 2019 on c5 and c5a AWS instances, only one core is used no matter what is selected for the: Cores (Threads) to use: option.

Steps to reproduce:

1. Launch an instance of Windows Server 2019 on a c5 or c5a AWS instance (other instance types not tested).
2. Install Java Windows Offline (64-bit) from here: https://www.java.com/en/download/manual.jsp
3. Download Sassa-v0.6.3
4. Launch Sassa
5. Select any Biome
6. Set cores to max
7. Click Start
8. View the Performance tab of Task Manager
9. Observe that the load on the CPU is not 100%

Expected Behaviour: CPU load is 100%

Please feel free to reach out to me with any questions or requests for testing.

[Civitello]

Did some more testing. On m5zn instances the difference in performance between 12 core and 24 core is nowhere near linear.

A task that takes 2:30 to 2:51 on a 24 core takes ~3:30 on a 12 core.

[Zodsmar]

So the new version that I am working on will have a CLI option, so you can run it headless. (There will be a config file assosiated with it to pass in the search parameters) I am doing a full rewrite of the code so once the 1.18 update is released can you test it again and let me know? If you still have the same problem, I will dig into it.