Typing lag or delayed keystrokes

Symptoms

• Text appears seconds after typing
• Lag happens only in certain apps, like browsers or word processors
• Wireless keyboard input is intermittent
• Typing feels fine right after restart but worsens over time

Likely causes

• CommonApp or browser tab consuming heavy CPU or memoryWhen a program is overloaded, it can't process keystrokes promptly.
• CommonWireless keyboard connection interferenceBluetooth or 2.4GHz dongles can suffer interference from other devices.
• PossibleAutocorrect or spell-check processing delaySome word processors add lag while checking each word as you type.
• PossibleLow battery on wireless keyboardA dying battery can cause intermittent dropped or delayed keystrokes.
• PossibleBackground update or scan runningSystem updates or antivirus scans can consume resources that slow input processing.

What to do

1. Check if lag happens in one specific app or system-wide by testing in a simple text editor.
2. Close unused apps and browser tabs to free up system resources.
3. Check the wireless keyboard's battery level and replace or recharge if low.
4. Move any USB Bluetooth receiver closer to the keyboard, away from other wireless devices.
5. Check Task Manager or Activity Monitor for a process using unusually high CPU.
6. Restart the computer to clear any built-up resource strain.
7. Update keyboard drivers or firmware if using specialized software.

When to call a pro

If lag happens on a brand-new high-spec computer with nothing else running, have the hardware checked for a fault.

Safety