Make sure to close all other programs, maybe run a defrag as well. If you are using windows make sure to run OS updates and reboot at least 3 times to make sure they are all installed.
TurboTax minimum system requirements for Windows - https://ttlc.intuit.com/community/system-requirements/help/minimum-system-requirements-for-turbotax-...
TurboTax minimum system requirements for Mac - https://ttlc.intuit.com/community/system-requirements/help/minimum-system-requirements-for-turbotax-...
Install TurboTax for Windows - https://ttlc.intuit.com/community/refund-status/help/how-do-i-install-the-turbotax-software-for-wind...
Install TurboTax for Mac - https://ttlc.intuit.com/community/installing/help/how-do-i-install-the-turbotax-software-for-mac/01/...
Troubleshoot install for Windows - https://ttlc.intuit.com/community/troubleshooting/help/troubleshoot-installing-and-running-turbotax-...
Troubleshoot install for Mac - https://ttlc.intuit.com/community/installing/help/turbotax-for-the-mac-installation-troubleshooter/0...
