Parallel World Streamer Mod FAQ
10 questions players actually ask, answered.
How do I know if Parallel World Streamer is actually working?
Check your logs during world generation or chunk loading—you should see messages indicating parallel processing across multiple threads. You can also compare chunk generation speed before and after enabling the mod; terrain should generate noticeably faster, especially on multi-core systems.
What's the difference between no-tick view distance and regular render distance?
No-tick view distance lets you see and render distant chunks without the game ticking their blocks, mobs, or redstone—this means far-away terrain loads visually but doesn't consume CPU cycles for game logic. Regular render distance ticks everything within range, causing lag when you travel fast through new terrain.
Why is my world generation slower with this mod than without it?
This usually means a modded terrain generator isn't thread-safe and the mod is containing it to prevent crashes, which forces it back to single-threaded generation. Check your logs for thread-safety warnings and review the guide on preventing crashes from unsafe generators.
Can I use Parallel World Streamer with Canary or Radium?
Yes—the mod automatically detects overlapping optimizations and steps aside to avoid conflicts, so you can safely install it alongside other chunk optimization mods. However, you'll only benefit from one optimization at a time, so using multiple together won't stack improvements.
Does this mod use more RAM?
Yes, parallel chunk processing trades memory for speed—the mod buffers more chunks in RAM to keep all CPU cores fed with work. The exact increase depends on your configuration and modpack, but it's a deliberate trade-off for faster generation.
How do I configure how many CPU cores this mod uses?
The mod auto-detects your available cores by default, but you can adjust the worldgen feed and worker thread settings in the config file to fine-tune parallelism for your system. See the Configure Parallel Chunk Generation guide for specific settings.
Will this mod help with lag when I'm just playing normally, not pre-generating?
Yes—it reduces stutter when you travel quickly into new terrain by spreading chunk loading and lighting calculations across cores instead of freezing the game thread. The no-tick view distance feature also helps by letting distant chunks render without ticking.
What happens if a modded structure generator isn't thread-safe?
The mod automatically detects and contains thread-unsafe generators to prevent crashes by isolating them from parallel processing. This means those specific generators will run slower (single-threaded), but your game won't crash.
Should I pre-generate my world with this mod?
Yes—pre-generation is much faster with this mod because it parallelizes all terrain, biome, feature, and structure generation across your CPU cores. See the Optimize Pre-Generation guide for recommended settings and tools.
Does this mod work on servers?
The mod is designed for single-player and client-side optimization; server-side chunk generation benefits depend on the server software and whether it supports parallel processing independently.