One major concern for mod users is lag. Redstone-heavy mods can cause server crashes. The is surprisingly lightweight.
What are you playing? (Survival, Creative, Multiplayer PvP) lovely craft piston trap mod
For those who still possess archived copies, users have reported needing to ensure the folder name is and that the file path contains no Cyrillic letters . Additionally, removing the “read‑only” checkmark from the game folder was recommended [10†L6-L8]. One major concern for mod users is lag