No game engine is perfect. And sometimes developers may have a hard time working with specific frameworks due to a large amount of legacy code or lack of good documentation.

Experienced game designer David Ellis is another developer to leave 343 Industries after working on the Halo franchise for more than a decade. This comes a few months after the studio’s restructuring and the departure of other veteran employees.

343 Industries continues to lose high-profile talent amid Halo Infinite’s troubled development. The game’s technical director is reportedly leaving the team, just days after the announced departure of the studio’s founder.

Bonnie Ross has announced her departure from 343 Industries and Microsoft. Her role will now be divided among three people as part of an internal restructuring.