Hey there, I am also running a 5800X3D, I'm using an AXP90 47mm all copper cooler, which I had opted to use liquid metal with (not the best choice since the cooler plate is pure copper... I wanted to give it the best shot against throttling, but even with PBO Tuner cranked to -30 it still throttles.) Just yesterday I had my first CPU temp related shutdown (The bios stopped on that message to let me know).
Granted, the fan curve was a bit lax this time but it's pretty clear even with this larger cooler that the 5800X3D cannot be kept from throttling from a heavy load. The game I was running was cod mwii. I think all core loads may increase going forward because ray tracing is very CPU heavy.
At idle (not full idle, puttering around on the desktop with a browser open) this CPU is reporting nearly 60C usually. Unfortunately I have forgotten if this is how it used to be or if my thermal solution is degrading. I'll keep an eye on the CPU temps while gaming and see what's going on.