> Fetching the data over the network will be slower than fetching it from a local source. A big aspect of this is data collection. Microsoft office has tons of

> Fetching the data over the network will be slower than fetching it from a local source. A big aspect of this is data collection. Microsoft office has tons of features that could easily be local buy that it wants to be "connected services" that are subject to their own TOS so they can steal your data. Based on the lag, it seems like all spell and grammar checks go through some server somewhere, almost certainly with the primary goal of scraping as much info as they can from what you're doing. Online first is all about data harvesting, much less so ease of operation and certainty not customer experience.