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View, browse and sort the ever-growing list of sessions by day, pass type, topic, and format. With this Session Viewer, you can view GDC 2023 session details and speakers, and share your favorites via social media. You will be able to build your schedule and access it during the show via export or Mobile App, once live. Sessions do fill up and seating is first come, first serve, so arrive early to sessions that you would like to attend.

Fixing the Unfixable: Techniques that Improved Stability for 'Elder Scrolls Online'

Péter Barabás  (Senior Programmer, Nemesys Games)

Location: Room 2005, West Hall

Date: Wednesday, March 22

Time: 10:30 am - 11:00 am

Pass Type: All Access Pass, Core Pass

Topic: Programming

Format: Lecture

Vault Recording: Video

Audience Level: Intermediate

During the last three years of development of Elder Scrolls Online, Péter Barabás, Senior Programmer at Nemesys Games, has fixed a number of exceptionally difficult bugs that were previously deemed too expensive or even impossible to fix—even though they were responsible for the majority of ESO crashes.

Not only do these investigations make for great detective stories, they also serve as perfect case studies for some of the tools used, and the often unorthodox techniques these tools were combined with. The examples in the presentation were each top crashes, fixing of which eliminated ~30% of crashes at the time on affected platforms.

The goal of this presentation is to share the techniques used, so attendees might better approach and solve their own issues, and achieve similarly high levels of stability for their players.


Attendees will learn how to make better use of data in crash reporters, and how to integrate and use Address Sanitizer with their games to solve difficult memory corruption issues previously thought unsolvable.

Intended Audience

This is for C++ programmers, especially ones whose focus is to improve title stability. While no specialized knowledge is necessary to understand the core concepts, having experience with memory corruption or memory managers will be needed to understand the more in-depth technical segments.