diff --git a/packages/react-reconciler/src/ReactFiberWorkLoop.js b/packages/react-reconciler/src/ReactFiberWorkLoop.js
index f6d1d7f7a5..c558fbd21d 100644
--- a/packages/react-reconciler/src/ReactFiberWorkLoop.js
+++ b/packages/react-reconciler/src/ReactFiberWorkLoop.js
@@ -375,7 +375,7 @@ let workInProgressRootRecoverableErrors: Array<CapturedValue<mixed>> | null =
 // content as it streams in, to minimize jank.
 // TODO: Think of a better name for this variable?
 let globalMostRecentFallbackTime: number = 0;
-const FALLBACK_THROTTLE_MS: number = 500;
+const FALLBACK_THROTTLE_MS: number = 300;
 
 // The absolute time for when we should start giving up on rendering
 // more and prefer CPU suspense heuristics instead.
diff --git a/packages/react-reconciler/src/__tests__/ReactSuspenseWithNoopRenderer-test.js b/packages/react-reconciler/src/__tests__/ReactSuspenseWithNoopRenderer-test.js
index fc1aa38708..1b05f8a2f4 100644
--- a/packages/react-reconciler/src/__tests__/ReactSuspenseWithNoopRenderer-test.js
+++ b/packages/react-reconciler/src/__tests__/ReactSuspenseWithNoopRenderer-test.js
@@ -1863,8 +1863,8 @@ describe('ReactSuspenseWithNoopRenderer', () => {
     // Advance by a small amount of time. For testing purposes, this is meant
     // to be just under the throttling interval. It's a heurstic, though, so
     // if we adjust the heuristic we might have to update this test, too.
-    Scheduler.unstable_advanceTime(400);
-    jest.advanceTimersByTime(400);
+    Scheduler.unstable_advanceTime(200);
+    jest.advanceTimersByTime(200);
 
     // Now resolve B.
     await act(async () => {