I hate those tings too, and sadly the best way to deal with them is save scumming
That may be the easiest, but I'm not convinced it's the best. There are environmental cues for most every location with them so really, I feel like the best way to deal with them is to play defensively. Sure, a lot of UnderRail can be zoomed through with little attention paid but if you get in that habit,
that's when the crawlers and coil spiders get you.
You see signs that there are dumb but dangerous animals around, well...lay some traps or caltrops, make some noise, throw some molotovs. They're dumb enough to come running; if you're smart enough to set the trap, they'll run right into it.