Describe the bug
Install the following mods and travell to the moon or the space station in the orbit of the earth.
There will be a big white horizontal line.

To Reproduce
Steps to reproduce the behavior:

1. Install the following mods
2. Create a new world
3. Travell with a rocket to the moon or the space station in the orbit of the earth.
4. look at the horizont

Screenshots/Videos
https://imgur.com/BkInPcM

Versions
Nothirium: 1.12.2-0.1.8-beta
RenderLib: 1.12.2-1.1.2
Forge: 14.23.5.2860
Minecraft: 1.12.2
Other mods (necessary to reproduce the bug):
MixinBooter: 4.2
AsmodeusCore: 1.12.2-0.0.31
Galacticraft: 1.12.2-4.0.2.284
GalaxySpace: 1.12.2-2.0.19
Optifine: 1.12.2-G5

Hardware
CPU: i7-7700K
RAM: 32GB
GPU: Geforce GTX 1770TI
VRAM: 8GB

Log File
https://gist.github.com/Gandalf360one/ae36db1a39b3a31b77f6800ca7d1650c

I'm unable to reproduce this.

Sorry for the late replay.
I did some research in the mean time (till you responded) and found out that the option "Fast Rendering" from Optifine caused that Issue.