Turn on slow keys
Turn on slow keys if you would like there to be a delay between pressing a key and that letter being displayed on the screen. This means that you have to hold down each key you want to type for a little while before it appears. Use slow keys if you accidentally press several keys at a time when you type, or if you find it difficult to press the right key on the keyboard first time.
Open the Activities overview and start typing Settings.
Click on Settings.
Click Universal Access in the sidebar to open the panel.
Press Typing Assist (AccessX) in the Typing section.
Switch Slow Keys to ON.
Quickly turn slow keys on and off
Under Enable by Keyboard, select Turn on accessibility features from the keyboard to turn slow keys on and off from the keyboard. When this option is selected, you can press and hold Shift for eight seconds to enable or disable slow keys.
You can also turn slow keys on and off by clicking the Slow Keys. The accessibility icon is visible when one or more settings have been enabled from the Universal Access panel.on the top bar and selecting
Use the Acceptance delay slider to control how long you have to hold a key down for it to register.
You can have your computer make a sound when you press a key, when a key press is accepted, or when a key press is rejected because you didn’t hold the key down long enough.