I don't say everybody should follow me and there are different opinions on this, so I try to explain why I do it this way.
In these days manufacturer requirements are strictly emission oriented, manufacturer is not interested about engine life over warranty time anymore.
In case of 2.9TFSI, it was designed for VW502 oil 5W-40, as You can find in 2018 m.y. oil recomendation. Due to new emission requirements and GPF/OPF in 2019, they changed oil requirements to VW504, because in those days there were no VW511 oils yet too.
Of course, who change car every other year, it doesn't matter, he can use manufacturer requirements for type and oil change interval.
I still want to have my RS5 so I use 0W-40 VW511, again, because it has better thermal stability and better lubrication in higher temperatures 2.9TFSI engine can easilly reach even in normal driving (on VCDS/ODIS/OBD11 You can find the difference between oil temperature in dash (which is temp in oil pan) and temp in return oil tube from engine block to oil pan and this difference is 15-20 C deg (few days ago I reach 115 C deg in dash so in return tube it was more than 130 C deg (it was spirited driving))).
I also change oil after 5000 miles now. Why? One reason is this:
https://www.youtube.com/watch?v=FlmTPH_5UmQ
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