There are a number of things of note in the report.
Your system drive is nearly full. This degrades performance, perhaps severely.
There are some old things, which may not work well, or at all, in your OS - can you still run EyeTV on Catalina? You have Soundflower version 1.6.7, and you would need 2.0b2 in order to work any fairly recent OS.
I wonder if having installed Duet may have played a part. This may be great to work with an iPad as an additional display, but I wonder if it may be causing any issues.
Also, if your version of FCP is not 10.5.4, you may consider updating; and it is, you could try deleting and downloading a fresh copy.