If you go to the list of installed updates, it will tell you which ones were installed with the dates.
Seeing which Windows updates are installed
Follow these steps to see which Windows updates are installed on your computer.
Open Windows Update by clicking the Start button Picture of the Start button. In the search box, type Update, and then, in the list of results, click Windows Update.
In the left pane, click
View update history.
For the flickering, would you please be able to try
Windows 10 - Constantly Switching Screens