Having multiple errors in Premiere Pro with no given reason why or how to fix them

1. A low-level exception occurred in: ImporterMPEG (Importer:xx)

2. Adobe Premiere Pro is running very low on system memory. Please save your project and proceed with caution

3. 3 files going offline for seemingly no reason, with no other files in the same location/of the same type affected

4. Frame substitution recursion attempt aborting after multiple attempts on file: [file location]

I have completely deleted the media cache and restarted my computer multiple times. I also do not have any other applications open while using Premiere and have uninstalled and reinstalled it. This has only started happening since the most recent update and is even affecting old projects I haven't touched since then. All of the errors are occurring with MP4's that have come from OBS recordings and all of the files in the project are at 60fps.

Specs:

Processor: Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz 2.59 GHz

GPU: Nvidia GeForce GTX 1660 Ti

Installed RAM: 16.0 GB (15.9 GB usable)

System type: 64-bit operating system, x64-based processor