diff --git a/packages/core/useFps/index.ts b/packages/core/useFps/index.ts
index 101d4946d29..9ba1324a5c2 100644
--- a/packages/core/useFps/index.ts
+++ b/packages/core/useFps/index.ts
@@ -19,9 +19,10 @@ export function useFps(options?: UseFpsOptions): Ref<number> {
   let last = performance.now()
   let ticks = 0
 
-  useRafFn((now) => {
+  useRafFn(() => {
     ticks += 1
     if (ticks >= every) {
+      const now = performance.now()
       const diff = now - last
       fps.value = Math.round(1000 / (diff / ticks))
       last = now
diff --git a/packages/core/useTransition/index.ts b/packages/core/useTransition/index.ts
index ad538a7eeb9..ec34a74e622 100644
--- a/packages/core/useTransition/index.ts
+++ b/packages/core/useTransition/index.ts
@@ -170,7 +170,8 @@ export function useTransition(
   let startVector: number[]
 
   // transition loop
-  const { resume, pause } = useRafFn((now) => {
+  const { resume, pause } = useRafFn(() => {
+    const now = Date.now()
     const progress = clamp(1 - ((endAt - now) / currentDuration), 0, 1)
 
     outputVector.value = startVector.map((val, i) => val + ((diffVector[i] ?? 0) * currentTransition.value(progress)))
@@ -188,7 +189,7 @@ export function useTransition(
     currentDuration = unref(duration)
     diffVector = outputVector.value.map((n, i) => (sourceVector.value[i] ?? 0) - (outputVector.value[i] ?? 0))
     startVector = outputVector.value.slice(0)
-    startAt = performance.now()
+    startAt = Date.now()
     endAt = startAt + currentDuration
 
     resume()