Chunks not loading outside of Overworld with Render distance >120 chunks

[doak-m]

This has been happening to me for a week or two now, and I'm using the latest versions of all the mods I have on.
With a higher render distance (the max I went to was 256 chunks), everything seems to be working fine in the Overworld.
However, in the Nether and in the End, beyond ~120 chunks, every block turns pitch black.
Here's a video of me demonstrating (with mod list):

OBS.2023-10-28.20-11-05.mp4