The thought of Adobe is nauseous, but may be inevitable depending on the organs.
It was very obvious to me after building the 3950X system that a bunch of slow cores don't help for many programs. Unfortunately the pandecimonum developed right after that or else I might have trashed that whole system and replaced it with iNtel.I tried Lightroom Classic on my 3960X. It's apparent to me that Adobe software is in no way, shape or form optimized for more than maybe four cores. There isn't much subjective difference between doing things on the Threadripper than the R9 5900. Just watching AI masking or DeNoise work, it looks like files are operated-upon in groups of four regardless of what resources the computer has available and not particularly better for running on AMD, Intel or nVidia GPUs, at least with the graphics hardware I have.
The Threadripper DOES blast through JPG exports, for all of the several seconds THAT takes.
SMP on desktop is at least 22 years old. I have a dual Athlon MP (actually XPs with pencil lines) board and procs from 2001 sitting in my closet...the Antec TruePower 430W PSU for that system still works, but now relegated to a low-power i3-2100 print server system. SMP itself has been around since the 1960's.
Whatever you use CPU performance has moved on since 2019. Maybe you are awaiting the INtel Meteorite lakes (14th) or AMD Ryzen version 5?