Speed up Steam's Shader in Linux Machines.

speedup.sh

#!/bin/bash
# This script optimizes Steam's background shader compilation by automatically configuring the steam_dev.cfg file 
# to use your total CPU threads minus four, a calculation designed to maximize processing speed while reserving 
# enough resources to prevent system freezes. It functions idempotently, meaning it first checks if the configuration 
# file exists (creating it if necessary) and then uses sed to either update the existing unShaderBackgroundProcessingThreads 
# line or append it if missing.

CONFIG_FILE="$HOME/.local/share/Steam/steam_dev.cfg"
TOTAL_THREADS=$(nproc)
TARGET_THREADS=$((TOTAL_THREADS - 4))

if [ "$TARGET_THREADS" -lt 1 ]; then
    TARGET_THREADS=1
fi

if [ ! -d "$(dirname "$CONFIG_FILE")" ]; then
    echo "Steam directory not found."
    exit 1
fi

if [ ! -f "$CONFIG_FILE" ]; then
    touch "$CONFIG_FILE"
fi

if grep -q "^unShaderBackgroundProcessingThreads" "$CONFIG_FILE"; then
    sed -i "s/^unShaderBackgroundProcessingThreads .*/unShaderBackgroundProcessingThreads $TARGET_THREADS/" "$CONFIG_FILE"
else
    echo "unShaderBackgroundProcessingThreads $TARGET_THREADS" >> "$CONFIG_FILE"
fi

Run with one command.

curl -fsSL https://gist.githubusercontent.com/nukhes/b36f127db5cf5b64a81f0bab206a3f61/raw/ | sh