How to tell to the user that a web app is optimized for a specific browser?

My web app is voluntary optimized for Chrome. It works on IE and Firefox but the user can find some design issues with old browsers like IE 8. It's a professional app' on an intranet and a some users don't use Chrome.

I'd like to display on the Home page something like "This site is optimized for Chrome" and may be a link to https://www.google.com/chrome/

Is-it a good idea to do that ? What is the "best" way to inform the user this app' is optimized for a specific browser ? Should I encourage the user to download Chrome ?