clear the cache by deleting the contents of the Cache folder from https://stackoverflow.com/questions/25210330/script-for-clearing-chrome-or-firefox-cache-on-windows

chrome_del.ps1

$Items = @('Archived History',
            'Cache\*',
            'Cookies',
            'History',
            'Login Data',
            'Top Sites',
            'Visited Links',
            'Web Data')
$Folder = "$($env:LOCALAPPDATA)\Google\Chrome\User Data\Default"
$Items | % { 
    if (Test-Path "$Folder\$_") {
        Remove-Item "$Folder\$_" 
    }
}