Fixes significant FPS drops that occur when multiple idle ships with thrusters are within render range. Tested with 20+ ships carrying 94 thrusters — total ship block entity rendering cost drops from ~34% of the client frame to ~17%.

What does it fix?

Every thruster on every VSSW ship runs an expensive renderTick() call every frame, even when the ship is completely idle with no thrust. This method performs a VS2 ship matrix lookup (getClientShip()) and several quaternion transforms — multiplied across dozens of thrusters across many ships, this adds up fast.

VSSW Client Fix skips renderTick() entirely for thrusters on ships beyond a configurable distance from the player, eliminating the per-frame VS2 overhead for ships you can't meaningfully interact with.

Features

Automatic thruster culling — thrusters on distant ships skip their expensive per-frame VS2 ship matrix lookups
Particle cleanup — the particle cube HashSet is cleared for culled thrusters, preventing stale particles from rendering
Single config value — just set cullDistance in blocks, done
Client-side only — install only on your client, no server changes needed
Compatible with Embeddium / Radium / Sodium — uses a Forge event + targeted Mixin, no conflicts with the Embeddium rendering pipeline

Configuration

After first launch, edit config/vssw_client_fix.properties:

properties

# Thrusters on ships beyond this distance (in blocks) skip their
# expensive per-frame VS2 ship matrix lookups. Default: 100
# Set to 99999 to disable.
cullDistance=100.0

Restart required after changing the config.

Requirements

Dependency	Version
Minecraft	1.20.1
Forge	47.x
Valkyrien Skies 2	Any
Valkyrien Space Star Wars (VSSW)	0.6.x