Best compression - Support - Duplicati

Hello, I have an existing archive/backup set. I want to enable the best possible compression - that is, make the stored data as small as possible - I don’t care if that makes it slower. I guess this applies to de-duplication settings as well - if there’s any settings I should change regarding that to make the stored data smaller? I read some forum posts about this already, but they were too old so it was too confusing - some mentioned things that apparently have since changed, etc., so I’m as

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Use Duplicati to Back Up Files on Debian, Ubuntu, Linux Mint

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