This server is selectable from your Capture Settings > Location and it's marked as USA - Alternative (Recommended). This Chrome based server can be selected when our primary recommended USA server (with Firefox as core browser) doesn't give optional results for your automated website screenshots.
On average, the Firefox based USA (Recommended) screenshot engine gives reliable and accurate results. But because of the broad spectrum of web techniques being used, it may be profitable in your situation to test and review the screenshots with the alternative software.
Start capturing website screenshots automatically and save a lot of grunt work. You'll be set up in minutes. No credit card required.