ZwiftApp crashing since last update

Symptom: ZwiftApp.exe has stopped working message. Happened twice today, for my first rides after latest update (1.0.64913). Twice after about 90 minutes of riding or waiting in the pens, first time during an event, second time following Bowie Brevet. Had only one application crash since early 2015, then today suddenly twice. Running Zwift on a pretty clean W8.1 installation with few processes in the background. Third ride of the day didn’t crash after 2h20 minutes (ended the ride as usual).

Zwift & Soft & Hardware Info:
Launcher 1.0.39
Game 1.0.64913
W8.1 64b
Intel Core i7 6700 @ 3.40GHz
2047MB NVIDIA GeForce GTX 1060 6GB
ForceWare version: 391.35
RAM 32.0GB

I have the two log files if it may be useful.

EDIT: reinstalled Zwift and updated Forceware drivers to v461.92. Didn’t have a crash (yet) with a 5 hours ride.

A post was merged into an existing topic: March 2021 Update issues