Status on SmartThings app VERY slow to update for LZW-30-SN and -31-SN switches

I’m using the latest device handlers. If I press the power on the app, it works, but the app shows the switch is off. If I close the app and wait a few minutes, the status will update. If I open the page for the light and press the power, I get “A network or server error occured” message. If I use an older device handler or the generic Z-Wave device handler, it works fine.