THE SHORT ANSWER

Use a wired or 5 GHz Wi-Fi connection and stop other downloads. Play in an up-to-date Chrome or Edge with graphics acceleration on, plugged in and out of energy-saving modes. Turn on your TV's game mode, and use a USB cable for your controller if Bluetooth feels slow.

Where the delay comes from

Every press travels through four stages before you see the result:

  1. Controller to browser: USB or Bluetooth delivers the press to Chrome.
  2. Browser to Microsoft and back: the press goes to the cloud console, and the video comes back. This is usually the biggest part.
  3. Decoding: your computer turns the video stream into a picture.
  4. Display: your screen shows it.

Work through the stages in the order below. The first ones fix the most cases.

1. Fix the network first

  • Use a cable if you can. Ethernet is the most stable option. On Wi-Fi, connect to the 5 GHz network and sit close to the router.
  • Stop competing traffic. Pause downloads, cloud backups, game updates and video streams on other devices.
  • Turn off your VPN while you play. It adds an extra hop.
  • Check your speed. Microsoft recommends at least 20 Mbps on PC. The free readiness check tests your connection and browser. Its latency figure is measured to a nearby server, not to Microsoft's, so treat it as a guide.

2. Set up the browser and computer

  • Use a current Chrome or Edge. Update and restart the browser.
  • Turn on graphics acceleration. In Chrome, open chrome://settings/system and enable Use graphics acceleration when available, then relaunch. Without it, your processor decodes the video and frames can arrive late.
  • Plug in your laptop and turn off battery saver. Chrome's Energy saver (under Settings → Performance) can lower video frame rates.
  • Close heavy tabs and apps, especially other video and games.
  • Play in full screen so the browser focuses on the stream.

3. Check the display

On a TV, turn on Game mode (sometimes called PC mode or low-latency mode) and turn off motion smoothing. TV picture processing can add a noticeable delay on its own. Computer monitors rarely need changes.

4. Check the controller connection

  • Try a USB cable. Bluetooth usually works well, but interference and some adapters slow it down. The controller polling rate test shows how often your browser receives updates, so you can compare USB and Bluetooth.
  • Remove extra software layers. Steam Input, DS4Windows and similar tools each add a step and can create duplicate controllers. See buttons firing twice to check.

Mouse aim feels slow, but buttons don’t?

If you use keyboard and mouse through controller emulation, slow aim is often not lag. Mouse movement becomes stick movement, and many games speed up turning gradually when a stick is held. That ramp feels like delay. Raise the game's controller look sensitivity, and use the mouse-to-stick sensitivity calculator to match Cloud Keys to your usual mouse speed. If the game supports native mouse and keyboard, that usually feels more direct. See keyboard and mouse options.