Debug threading & multiprocessing

[codecov-commenter]

Codecov Report

Base: 42.85% // Head: 43.12% // Increases project coverage by +0.26% :tada:

Coverage data is based on head (f121252) compared to base (088c1ee). Patch coverage: 50.00% of modified lines in pull request are covered.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #243 +/- ## ========================================== + Coverage 42.85% 43.12% +0.26% ========================================== Files 15 15 Lines 1904 1890 -14 ========================================== - Hits 816 815 -1 + Misses 1088 1075 -13 ``` | [Impacted Files](https://codecov.io/gh/BrillouinMicroscopy/BMicro/pull/243?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=BrillouinMicroscopy) | Coverage Δ | | |---|---|---| | [bmicro/gui/evaluation/evaluation\_view.py](https://codecov.io/gh/BrillouinMicroscopy/BMicro/pull/243/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=BrillouinMicroscopy#diff-Ym1pY3JvL2d1aS9ldmFsdWF0aW9uL2V2YWx1YXRpb25fdmlldy5weQ==) | `44.01% <50.00%> (+1.29%)` | :arrow_up: | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=BrillouinMicroscopy). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=BrillouinMicroscopy)

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[raimund-schluessler]

The threading doesn't seem to be the issue. The program still crashes on some windows versions when clicking Evaluate. Seems like multiprocessing causes this.