In the Apex Legends Season 4: Assimilation patch notes, Respawn touched upon on of the particularly nasty errors that plagued some players - DXGI_ERROR_DEVICE_HUNG. Apparently, the fix is being worked on closely with Nvidia.
"Some player are experiencing an issue where Apex is crashing with a DXGI_ERROR_DEVICE_HUNG error message. We are working closely with Nvidia to help determine the cause of the issue and provide gamers with a solution (via updated driver or game patch) as soon as possible", the dev wrote.
Respawn also asked Apex Legends players who are encountering this error to provide as much information as possible, specifically the graphics card vendor and model, their graphics driver version.
Perhaps most helpful would be if players could reproduce the error reliably, i.e. detect a pattern of a location, duration of gameplay or other info they notice. This would likely help Respawn stomp out the bug in a jiffy.
Apex Legends players who suffered from this crash probably hate it doubly for the penalties it may have brought on them in ranked play. While we'd normally assume there's a way to differentiate this crash from the alt-F4 method, we can't say that with certainty.
Thankfully, Respawn loosened up the rules for Ranked Play quitter penalties, which should ameliorate some of these issues anyway.
"We will be limiting the RP loss forgiveness when you leave once per day. If you exceed once per day more than three times per ranked series, you lose all forgiveness for the remainder of that series", they wrote.
Apex Legends players that exceed these limits will no longer have RP loss forgiveness when leaving a match, "regardless of the reason for quitting". Everything else remains the same, both in terms of quitter penalty alerts and the scaling penalties.