Hi guys. I just want to share my recent experience with migration from Intel i7 4790k based system to my new setup - Ryzen 7 3700x, Asrock X570 Taichi (bios v2.10 - Update AMD AGESA Combo-AM4 1.0.0.3 ABBA), 2x16Gb G.SKILL Trident Z CL16 3600 Neo. Ladies and gentleman, outstanding! Once I booted (legacy, always legacy...), I had to do nothing more (well, apart from re-assigning cores to VMs as I have twice more of them now). No system freezes, array associated HDDs automatically and correctly - I just pressed start and that's it, GPU pass-through works (single VGA in system using VGA bios dump), even my static configuration of NIC automatically applied itself to the new/different HW (previously the integrated NIC was Realtek, now it is Intel - thus why choosing MB which I chose) - and I am using multiple sub-interfaces with VLAN tagging and passing a bunch of them as VMX NICs to my pfSense VM, dockers run perfectly as well.
After reading numerous posts on this forum I was expecting a lot of troubleshooting, tweaking, issues etc. but so far, all has been smooth as it can be. Big thanks to Lime Tech., to Spaceinvader One and to all of you writing very useful posts.