After getting a pre-game notification in startup of another game I play - that my current NVidia driver had a known issue - I decided to look around to see what the issue is, and found the note about the fix for crash-to-desktop in F1 2019.
Came to the forum to comment and noticed the link at the top regarding the same.
I therefore installed the hotfix driver, reverted my clock speed back to standard (from reduced speeds), and have just played a 3 hour session of F1 2019 without issue. Once, in race, it stuttered. I expected a crash as normal but it played on. In the podium ceremony (where it was previously almost guaranteed to crash), it stuttered as well, but carried on.
I would strongly recommend upgrading to the hotfix driver.