Crash to desktop when approaching Atlantis Latomia

In the "Assassin's Creed: Odyssey" Atlantis DLC, chapter 3, there's a quarry in the outer ring called 'Atlantis Latomia'. Whenever I approach it, the game crashes to desktop. I've tried approaching it a variety of ways now. I've approached from the northeast, swimming across the canal. I've approached from the southeast after looting the Doma of Dioprepes. I've stopped out of sight of the quarry entirely and swapped over to eagle vision and tried to use Ikaros to scout the place out.

• On foot, as soon as I get close enough to actually "see" into the camp (eg so the game has to start figuring out where the NPC are and render them), the game freezes briefly, and then crashes to desktop.
• Flying over it as Ikaros, I'm able to tag a whole bunch of NPC targets, but when I start looking around the area where the Ostraka is, the same thing happens -- brief freeze then CTD.
• When just attempting a flyover (no stationary mode/tagging of enemies), as soon as Ikaros flies over the red tent in the south of the quarry, it crashes to desktop.
• Attempting to go around to the Southwest by jumping into the canal causes the game to freeze.

It might be GPU related. I happened to have the resource monitor up when a crash occurred, and it showed that it pretty much maxed out '3d rendering' before crashing (see top-left in the screenshot below.)

I also managed to screenshot it when it froze immediately before a CTD, with the game's process monitor on. It shows GPU at 95% as well. The red tent under Ikaros's left wing is the one that always seems to trigger the issue.

I tried setting the graphics settings to 'Low' (my usual is a custom mix somewhere between Very High and Ultra), but the same thing happens at the same place -- GPU spikes and pegs at 95%+, freeze, crash to desktop. The screenshot above is actually from when I was playing with low graphics settings.

Is there a workaround for this? I can't progress in the main quest because of this, since the target of the 'Through the Cracks' task of the 'Good from Far, Far from Good' quest in the main progression. Googling around found a number of several-year-old reports of "random crashing", but this doesn't seem random, it's specific to this one area. I've never had the game crash before now.

I'm playing on PC, Windows 10. The problem happens whether I launch via Steam or directly via Ubisoft Connect. I have all of the DLCs. Since the GPU seems to be suspect, I have a GTX 1060 with the latest GeForce 'Game Ready' drivers (512.15 - 03/22/2022). Steam overlay is disabled.