Finally able to oblige.
Third run of benchmark1 on mastercomfig medium preset w/ customizations (spoiler below), 1080p. Hardware: RTX 3070 Ti, 32 GB DDR4-3600 CL18

3700X (old CPU):

2639 frames 14.540 seconds 181.50 fps ( 5.51 ms/f) 14.491 fps variability

5800X3D (new CPU):

2639 frames 11.418 seconds 231.13 fps ( 4.33 ms/f) 17.377 fps variability

I run these mastercomfig settings because I'm a filthy pubber, but if you'd like a run with more comp-like settings, I can bench it for you (as long as it's still mastercomfig). Either way, for just a single CPU generation gap I'm pretty happy with the result, now I just have to check if my frames can still drop to 100s in pubs, but I'm not getting my hopes up...

EDIT: So far, so good! From dropping to 100-110 on medium preset, to dropping to 130 on medium high. That alone made the upgrade worth it for me, tbh

A little something for you, then.

Now that the BIOSes have matured a fair bit, I decided to OC my RAM to see how much of a difference would that make. Couldn't overclock my sticks as much as I hoped for, but there's something at least.
As a reminder: R7 3700X (PBO enabled), Win10 1903, 16 GB RAM; customized mastercomfig medium preset (afaik it's just textures set to very high and ragdolls enabled); DX9; launch parameters recommended by mastercomfig; using benchmark_test (the newer one)

Before (XMP profile, 3000 MHz CL16):

4812 frames 21.475 seconds 224.07 fps ( 4.46 ms/f) 31.826 fps variability

After (OC, 3466 MHz CL16):

4812 frames 20.741 seconds 232.01 fps ( 4.31 ms/f) 31.111 fps variability

(got screenshots of before/after with CPU-Z window open, I can send them if anyone wants to)

Just about 3.5% of difference. Whether or not it's worth the hassle and the potentially shorter lifespan I'll leave to your judgement ¯\_(ツ)_/¯

DX9, launch parameters exact same from the mastercomfig's github page.

500 reboots later (not really, just under a hundred actually; don't do B450 boards, kids), here I am testing the 3700X. Results are in.

Setup details:
- Windows 10 1903
- GeForce driver 431.60
- GeForce Experience with replay enabled, no game optimization
- game details: mastercomfig v6 latest, 1080p, DX9, mastercomfig's launch parameters, mods: budhud, Less Distracting Explosions, mastercomfig addons (mouse tweaks, no pyroland, no soundscapes, no tutorial)
- tested with timedemo_runcount set at 3, so stuff being loaded in doesn't lower the results

Since there's a ton of data, I figured it'd be better to show it all in a table, and since TFTV doesn't have tables... Here's a Google Docs link: https://docs.google.com/spreadsheets/d/1AGtyRBvgcpYv2T8h9bSgx9IDd8fXFES175tPrsK5hMI/edit?usp=sharing

whitepuzzle, I think you'll be happy with the results ;)

Probably so, but given the unstable nature of B450 boards I'll leave the memory alone until a somewhat-fully stable BIOS comes out. It's good enough that the XMP profile works.

My 3700X arrived today, I can certainly run such a benchmark for you (on 16GB dual channel 3000 MHz CL15) and I'll post the result tomorrow :)

Someone has reuploaded it in previous posts.
https://www102.zippyshare.com/v/fvfg8CAP/file.html

^ what CPU is that?

I'm upgrading from i5-3570k to R7 3700X, so I'll make sure to post some comparisons with different mastercomfig presets, I might include frametime graphs with that if I feel like it :)