Just to help others I’m going to detail my journey fighting Zwift crashes. Same problem as many other posters, when looking at my log in event viewer around the time of the crash I see the message “Display driver igfxn stopped responding and has successfully recovered.” As with other posters my laptop has integrated graphics, for the record its a Dell XPS 7390 16GB i7-1065G7 (10th gen) - about a year old and a fairly well specced PC. When I started using Zwift about 2 weeks ago my gfx driver was dated Sep 2020. As advised by Zwift support I upgraded to the latest driver (May 2021) but still had crashes. Today I installed the oldest Intel Iris plus driver I could find on the Intel site (Mar 2020 - 26.20.100.7985) - this date precedes the emergence of the graphics driver issues raised in this thread. Did a 3.5hr ride today without issue. Have everything crossed! Will provide updates! Did try installing the drivers that Georg mentioned previously - was warned by Windows they were not verified for my system but forced them on anyway and end up with a black screen - had to jump through some hoops to recover things - lesson learnt!