If you are dealing with the Gmail lagging or Gmail slow working issue, then there are some factors that may cause this issue, like Gmail server issues, installed extensions, etc. If your query is
why is Gmail so slow in Chrome, then it is because you are using the outdated Chrome browser. So, ensure to update your Chrome browser with the most recent updates. You can also check the browsing data and, if possible, clear your Chrome caches, cookies, and history to solve various errors at the same time. Further, try to uninstall extensions that are conflicting with your browser and then restart your Chrome and check if this solves the issue.
