Pegasus? I don't know what this is but I do know Ive been having issue after issue with my devices.

Promise pegasus are some of the earliest Thunderbolt-connected multiple-drive enclosures. They have their extensions included in MacOS because of an early partnership with Apple. Here is a link to one of their devices still for sale on the Apple online store.

PROMISE Pegasus32 R4 16TB RAID System - Apple

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Mjbluco wrote:

everything is from an unknown source? I thought apple only used apple or trusted developers? And then what really caught my eye was the Pegasus software highlighted in blue.

If you follow the path as provided in your screenshot...

From Finder>Go>Go to Folder, copy and paste:

/System/Library/PrivateFrameworks

This seems normal part of the macOS, this is a private Apple framework and has been around for years.

I think you can look for issues else where.

For your on-going problems if no insight or resolve—

you can get a good look at your System config. and reveal conflicts or issues, you can download/run this trusted utility https://etrecheck.com

If you need help interpreting the report you can post it here in its entirety in the "Additional Text" box in the editing toolbar below, in your reply.