First thing you will need is a third party program called Dot Net Spy. You can download it from this site. https://ratchet302.gitlab.io/content/guides/d/dot-net-spy/instructions/index.html#downloads-dot-net-spy

Once you have the contents extracted open Dot Net Spy(64).bat.

Click File>Open and navigate to your Steam common folder (This is mine for example D:\Steam\steamapps\common\TheFalconeer\TheFalconeer_Data\Managed)

In the Managed folder find and open Assembly-CSharp.dll

Now click on Edit and Search Assemblies and search for "IsEnabledAndSupported"

Double click on ChromaticAbbertaion
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Find the line that starts with "return this.enable.value" (should be 14) and right-click on it and choose Edit Method (C#) and replace that line with "return false;" (no quotes) then click Compile and be sure to save.
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This is what it should look like when finished.
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That's it! Your game should now be free of aberrations! Be sure to compile and save!