This is a general solution for slow browser, Gmail issues, site issues that were previously working, web connection issues.
Reset Cache and Cookies in Chrome
Warning: This will clear any auto-logins to any sites you have it set-up for.
1. Click on the 3 verticle dots at the top-right corner of Chrome.
2. Click on "Settings"
3. Click on "Clear Browsing Data"
4. Set a time range ("All Time" is typically the best). Make sure only the bottom two options are enabled. The first one will delete all history a well.
5. Click "Clear data"
6. Refresh the problem page or restart the browser completely.