On the Nintendo Switch (system version 12.0.2)
Don't Starve (version 1.0.7)
In Shipwrecked with each weather effect (rain, wind, hail, land flooding, lightning, all of which can happen simultaneously) the frame rate starts to drop and progressively gets worse over time. We've observed performance as low as 2fps.
As the weather effects stop the frame rate improves again.
It briefly improves after quitting and reloading the game but the frame rate issues quickly return within the first few minutes if the weather continues.
Steps to Reproduce
Play Shipwrecked on Switch.
Just play until the bad weather starts to kick in in second and third season.