I've seen quite a few who just enable XMP on their boards and ran at the advertised 3600 mhz with CAS 16 but that doesn't mean I'll get the same. The board is an MSI x570 pro carbon by the way.
Yeah a lot of people don't even think of it as a conventional OC anymore because it's so brainless these days. And it does work in the vast majority of cases, but Ryzens are a little more finicky than Intels and older AMD CPUs when it comes to RAM.
The 3700 has the same memory spec as the 3600.