Render times slowed to a crawl and then crashed after system reset

Okay so to preface this, I want to note that my company's IT department came through and wiped my entire system in order to fix one tiny issue and I've been rebuilding all of my PC settings from scratch for days now and I didn't have this issue before they did this, so I'm assuming this is a setting issue, but I don't know what else to check at this point.

I'm trying to render a 4K 60fps timeline that's about 4.5hrs long. All the footage is raw with no effects or anything at all on the clips. Obviously it is going to take awhile, but I assumed it would be able to be done in about a half a day to a full day. However, it currently lists the ETA at 115 hours. What is happening here??

My Sequence Settings are set to I-Frame Only Previews at 1080p.

My Media Cache folders are all listed as the same hard drive as the files and in the same spot they were before (its a Dropbox linked folder, but I have Sync turned off right now).

Hardware Acceleration Decoding is turned on.

I am on the latest Windows Update, GPU update, and Premiere version:

Edition Windows 11 Pro
Version 23H2
OS build 22631.3593
Experience Windows Feature Experience Pack 1000.22700.1003.0

Premiere 24.3

NVIDIA Studio Driver 552.22

Hardware:

AMD Ryzen Threadripper PRO 5965WX 24-Cores 3.80 GHz
Installed RAM 128 GB
NVIDIA Geforce RTX 3060

I am using WD Blue hard drives.

Task Manager lists my CPU and RAM only capping out at like 30%
GPU at around 47%
HDD at 10%

Usually I don't get an error message, Premiere just quits, but today I actually got one (see attached)

Any ideas as to what to try here?