diff --git a/packages/react-native/ReactCxxPlatform/react/renderer/animated/drivers/AnimationDriver.cpp b/packages/react-native/ReactCxxPlatform/react/renderer/animated/drivers/AnimationDriver.cpp
index 086c09a169a..edb0463e15f 100644
--- a/packages/react-native/ReactCxxPlatform/react/renderer/animated/drivers/AnimationDriver.cpp
+++ b/packages/react-native/ReactCxxPlatform/react/renderer/animated/drivers/AnimationDriver.cpp
@@ -69,7 +69,6 @@ void AnimationDriver::runAnimationStep(double renderingTime) {
     return;
   }
 
-  // ticks are 100 nanoseconds, divide by 10000 to get milliseconds.
   const auto frameTimeMs = renderingTime;
   auto restarting = false;
   if (startFrameTimeMs_ < 0) {
diff --git a/packages/react-native/ReactCxxPlatform/react/renderer/animated/drivers/FrameAnimationDriver.cpp b/packages/react-native/ReactCxxPlatform/react/renderer/animated/drivers/FrameAnimationDriver.cpp
index 7bcec731ec2..5398648ea13 100644
--- a/packages/react-native/ReactCxxPlatform/react/renderer/animated/drivers/FrameAnimationDriver.cpp
+++ b/packages/react-native/ReactCxxPlatform/react/renderer/animated/drivers/FrameAnimationDriver.cpp
@@ -58,7 +58,7 @@ bool FrameAnimationDriver::update(double timeDeltaMs, bool /*restarting*/) {
     }
 
     const auto startIndex =
-        static_cast<size_t>(std::ceil(timeDeltaMs / SingleFrameIntervalMs));
+        static_cast<size_t>(std::round(timeDeltaMs / SingleFrameIntervalMs));
     assert(startIndex >= 0);
     const auto nextIndex = startIndex + 1;
 
diff --git a/packages/react-native/ReactCxxPlatform/react/renderer/animated/tests/AnimationDriverTests.cpp b/packages/react-native/ReactCxxPlatform/react/renderer/animated/tests/AnimationDriverTests.cpp
index 456edf22943..5fd98c4bd2a 100644
--- a/packages/react-native/ReactCxxPlatform/react/renderer/animated/tests/AnimationDriverTests.cpp
+++ b/packages/react-native/ReactCxxPlatform/react/renderer/animated/tests/AnimationDriverTests.cpp
@@ -40,21 +40,21 @@ TEST_F(AnimationDriverTests, framesAnimation) {
           "toValue", toValue),
       std::nullopt);
 
-  const auto startTimeInTick = 12345;
+  const double startTimeInTick = 12345;
 
   runAnimationFrame(startTimeInTick);
   EXPECT_EQ(round(nodesManager_->getValue(valueNodeTag).value()), 0);
 
-  runAnimationFrame(startTimeInTick + SingleFrameIntervalMs * 2.5 * TicksPerMs);
+  runAnimationFrame(startTimeInTick + SingleFrameIntervalMs * 2.5);
   EXPECT_EQ(round(nodesManager_->getValue(valueNodeTag).value()), 65);
 
-  runAnimationFrame(startTimeInTick + SingleFrameIntervalMs * 3 * TicksPerMs);
+  runAnimationFrame(startTimeInTick + SingleFrameIntervalMs * 3);
   EXPECT_EQ(round(nodesManager_->getValue(valueNodeTag).value()), 90);
 
-  runAnimationFrame(startTimeInTick + SingleFrameIntervalMs * 4 * TicksPerMs);
+  runAnimationFrame(startTimeInTick + SingleFrameIntervalMs * 4);
   EXPECT_EQ(round(nodesManager_->getValue(valueNodeTag).value()), toValue);
 
-  runAnimationFrame(startTimeInTick + SingleFrameIntervalMs * 10 * TicksPerMs);
+  runAnimationFrame(startTimeInTick + SingleFrameIntervalMs * 10);
   EXPECT_EQ(round(nodesManager_->getValue(valueNodeTag).value()), toValue);
 }
 
diff --git a/packages/react-native/ReactCxxPlatform/react/renderer/animated/tests/AnimationTestsBase.h b/packages/react-native/ReactCxxPlatform/react/renderer/animated/tests/AnimationTestsBase.h
index 8e582908b55..97ff2be3743 100644
--- a/packages/react-native/ReactCxxPlatform/react/renderer/animated/tests/AnimationTestsBase.h
+++ b/packages/react-native/ReactCxxPlatform/react/renderer/animated/tests/AnimationTestsBase.h
@@ -42,7 +42,7 @@ class AnimationTestsBase : public testing::Test {
   }
 
   void runAnimationFrame(double timestamp) {
-    nodesManager_->onAnimationFrame(static_cast<uint64_t>(timestamp));
+    nodesManager_->onAnimationFrame(timestamp);
   }
 
   std::shared_ptr<NativeAnimatedNodesManager> nodesManager_;