any slab i place on the tracks has a broken texture like a bunch of yarn same for both variants using optifine but no shaders

yeah it works without optifine dose that mean i just shouldn't use it or do you think there's a fix

Making a fix would sadly be very difficult and finnicky - the team would have to decide if it's worth it to put in the effort.

Just in case, try without OptiFine installed - even without shaders enabled (and you do have a shader in this screenshot) it makes drastic changes to the Minecraft codebase that break a lot of mods and cannot be developed against due to OptiFine's closed-source nature

Unfortunately supporting optifine is simply not worth the effort. There are two ways we could try to fix this:

1. Crack open optifine & decompile it - which depending on optifine's license would be illegal.
2. Spend obscene amounts of time trying to find a fix based on trial-and-error.

Please try optifine alternatives, such as Sodium and Iris on fabric (full list of fabric replacements for optifine https://lambdaurora.dev/optifine_alternatives/), or their Forge ports Rubidium and Oculus).