diff --git a/Cargo.toml b/Cargo.toml
index 340fe02234..912e33c495 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -158,6 +158,10 @@ buzz-ws-client = { path = "crates/buzz-ws-client" }
 buzz-relay-mesh = { path = "crates/buzz-relay-mesh" }
 buzz-datastore-tracing = { path = "crates/buzz-datastore-tracing" }
 
+[profile.release]
+lto = "thin"
+codegen-units = 4
+
 # CI profile — builds the relay for desktop e2e. Dependencies keep full
 # release optimization (warm from main's cache; they carry the runtime hot
 # path: tokio/sqlx/axum). Workspace crates build at opt-level 1 — enough for
@@ -167,6 +171,7 @@ buzz-datastore-tracing = { path = "crates/buzz-datastore-tracing" }
 [profile.ci]
 inherits = "release"
 lto = false
+codegen-units = 16
 opt-level = 1
 
 [profile.ci.package."*"]