I literally woke up one day and said: "I'm gonna make high poly track to see how my game can handle it." Turns out my game could handle it just fine but this is not a guarantee for you! Just throwing this out there for potato PCs. I never meant to go so far with these tracks lol!
Although you may be able to use this for survival, the materials are not correct. I plan on fixing this in the coming updates.
This pack is by TheLegend5550 and is made for Immersive Railroading MC Mod versions; 1.10, 1.11 and 1.12
You can download Immersive Railroading mod here: https://minecraft.curseforge.com/projects/immersive-railroading
More information can be found at https://github.com/cam72cam/ImmersiveRailroading.
Discord is live at https://discord.gg/CS2RTGq, come pitch ideas or help test unstable versions!
Photos for the interested: