I'm playing OWB. Just visited X-22 Botanical Gardens and picked up the last module for All My Friends Have Off Switches. Game started crashing on fast-travel to every single discovered location including The Sink balcony. Sometimes it crashes immediately, sometimes it gets to the loading screen and THEN crashes a couple of seconds later.

I have Dead Money, HH and OWB. No mods whatsoever.

The glitch has now fixed itself after I walked on foot all the way to The Sink and activated the personality of the Biological Research station. Cost me a few stimpacks in a couple of close encounters with Lobotomites; they may be brainless, but they're disturbingly accurate with those Hunting Revolvers.

Things that didn't fix the glitch:

Leaving the game and starting again.

Closing and relaunching Steam.

Rebooting laptop.

Entering Magnegohydraulics thingamagig, to see if the game gets through a loading screen that's not fast-travel.

Had the same problem and couldn't fix it. So I just walked everywhere :shrug:

The damn bug is back. Seems to be connected to visiting the X-22 Botanical Gardens.