Really wish performance was improved much more with regards to pop-in - it's bloody atrocious. :-( (looking to play on a ps4 pro).
However, I'm still considering purchasing but would like to know if there are any Real Courses in the game?
I am right in thinking I can get any Real Course via the Course Editor albeit with different names?
If so, is there a comprehensive list anywhere which points me in the right direction of said Real (imitated) Courses?
Yes, people are doing incredible jobs with what they call RCRs - Real Course Recreations. They often don't have the real name attached due to IP issues, so you have to follow threads online to know what they are - for example the classic Augusta National recreation is, I believe, called Magnolia National.
This thread on HB Studios' official forums is a decent place to start. The other place to check is the TGC Tours course list.
Not all courses are suitable for being made in TGC. Courses that have very high rough like the long fescue seen at Erin Hills in the US Open this year. There's only one heavy rough style and only one light rough style (colour/texture can be changed). So not everything will be there but there's some great ones.
If you just use the in-game search tools you could end up with a lazy or poor version of what you're looking for so I'd use the forums.