diff --git a/.changeset/brave-islands-dress.md b/.changeset/brave-islands-dress.md
new file mode 100644
index 0000000000..68dd003259
--- /dev/null
+++ b/.changeset/brave-islands-dress.md
@@ -0,0 +1,5 @@
+---
+"effect": patch
+---
+
+remove usage of performance.timeOrigin
diff --git a/packages/effect/src/internal/clock.ts b/packages/effect/src/internal/clock.ts
index a4ff48147e..53b1ce5e72 100644
--- a/packages/effect/src/internal/clock.ts
+++ b/packages/effect/src/internal/clock.ts
@@ -40,15 +40,10 @@ export const globalClockScheduler: Clock.ClockScheduler = {
 
 const performanceNowNanos = (function() {
   const bigint1e6 = BigInt(1_000_000)
-
   if (typeof performance === "undefined") {
     return () => BigInt(Date.now()) * bigint1e6
   }
-
-  const origin = "timeOrigin" in performance && typeof performance.timeOrigin === "number" ?
-    BigInt(Math.round(performance.timeOrigin * 1_000_000)) :
-    (BigInt(Date.now()) * bigint1e6) - BigInt(Math.round(performance.now() * 1_000_000))
-
+  const origin = (BigInt(Date.now()) * bigint1e6) - BigInt(Math.round(performance.now() * 1_000_000))
   return () => origin + BigInt(Math.round(performance.now() * 1_000_000))
 })()
 const processOrPerformanceNow = (function() {