My keys are sticky, how do I fix this?

If your keys are sticky, try using an alcohol wipe to carefully clean the surface of the keys and then cover the keyboard with a silicon protector to prevent any more damage to the surface. For the slow response, there might be something underneath the keys that may be causing obstruction. To solve this, remove the keys and carefully clean underneath the surface or consider replacing the keys entirely. To do this, visit this troubleshoot page: Samsung ATIV Book 9 Plus Troubleshooting and see their repair guide:Samsung ATIV Book 9 Plus Keys Replacement