Transferring large amounts of files slow, even on a Samsung 990 Pro PCIe 4.0 M.2 drive. Normal?

So I built a new system and upgraded my OS drive to a 990 Pro from a Samsung 970 EVO Plus. I don't know why, but it seems like copying large amounts of files on this new PC is actually slower than I remember on my old rig. CrystalDiskMark is benching the drive fine:

https://i.imgur.com/aR7BhPq.png
https://i.imgur.com/1CytfJT.png

But when I copy a directory that has a lot of files, transfer speeds slow to a crawl:

https://preview.redd.it/eqncuj3x4ord1.png?width=561&format=png&auto=webp&s=7ab373a5af122f07fa1475dd36b6794fc71e1266

I know there is a lot more overhead associated with copying large amounts of files, but I really expected the drive to be more performant.

Quick PC specs:

CPU: AMD Ryzen™ 9 9950X
MOBO: ASRock X670E Taichi
RAM: G.SKILL Flare X5 64GB (2x32GB DIMMs) 6000MT/s CL30-40-40-96
NVME1: Samsung 990 PRO 4TB M.2 PCIe v4.0 (7.45 GB/s)
NVME2: Samsung 970 EVO Plus 2TB M.2 PCIe v3.0 (3.50 GB/S)
NVME3: Samsung 970 EVO Plus 2TB M.2 PCIe v3.0 (3.50 GB/S)
OS: Windows 10 Pro x64 22H2 (OS Build 19045.4894)

1. I've enabled high performance mode in Magician.
2. The 990 Pro is installed in my PCIe 5.0 slot (I know the drive is only v4.0, wondering if maybe this is the issue).
3. For the 970 EVO Plus drives, I installed the Samsung NVMe™ Driver (v3.3) from here: https://semiconductor.samsung.com/us/consumer-storage/support/tools/
4. Here is a screenshot of all the drivers installed:

https://i.imgur.com/Rn4P2O7.png

Is this normal? It would be great if anyone else with this same drive could share their experience with it.

And yes I know about the trick of zipping/archiving files first and then transferring one big file. I am just worried that I have some kind of driver/installation problem.

Thanks for any input!