Having the same issue with TT2021 installed locally. Entering W2 info and tabbing or clicking to the next entry there's a 10-15 second delay where if you start entering data immediately your data entry will be screwed. Called support and they told me to use a Ethernet connection because the app needs to connect to the modem even though it doesn't need to connect to Intuit's servers. Obviously support doesn't know what they're talking about.
