Compatibility view should be disabled to view the live timing correctly.
If you see an icon like this next to your location bar and if it is highlighted you are using compatibility view.
You can also check if the option 'Compatibility view' is checked under the menu 'Tools'.
Disable the compatibility view for this webpage by clicking either the icon or the menu option.
If the problem still persists check if the live timing webpage is listed in the 'Websites you have added to Compatibility View' list under the menu 'Tool' -> 'Compatibility view settings'. Remove the live timing website from the list, click Close and reload the webpage.