diff --git a/Cargo.toml b/Cargo.toml
index ef775c6..c611915 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,6 +5,8 @@ edition = "2024"
 
 [dev-dependencies]
 criterion = { version = "0.7", features = ["html_reports"] }
+[build]
+rustflags = ["-C", "target-cpu=native"]
 
 [[bench]]
 name = "bench_aoc_1"
@@ -16,5 +18,12 @@ harness = false
 [[bench]]
 name = "bench_aoc_3"
 harness = false
+[[bench]]
+name = "bench_aoc_4"
+harness = false
 [dependencies]
-strength_reduce = "0.2.4"
\ No newline at end of file
+[profile.bench]
+opt-level = 3
+lto = "fat"          # "Link Time Optimization" - Critical for micro-benchmarks
+codegen-units = 1    # Slows compile time, but makes faster code
+panic = "abort"      # Removes stack unwinding checks (faster)
diff --git a/src/lib.rs b/src/lib.rs
index 69f930e..1f98310 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1 +1,2 @@
+#![feature(portable_simd)]
 pub mod aoc;