The script http://ctrlq.org/code/19319-website-monitor-script http://ctrlq.org/code/19319-website-monitor-script iterates through the URLs in the spreadsheet

The script http://ctrlq.org/code/19319-website-monitor-script http://ctrlq.org/code/19319-website-monitor-script iterates through the URLs in the spreadsheet and for each invokes https://developers.google.com/apps-script/reference/url-fetch/url-fetch-app https://developers.google.com/apps-script/reference/url-fetc... which can accept parameters for a URL. If those GET requests initiate intensive processes, then there could be a problem.