Hi Btbpsm, if your HomePod is still under warranty or under AppleCare+, I'd suggest opening a case with Apple Support.
Official Apple Support
You can also leave official product feedback if the latest update has caused united issues for you. Feedback is valuable
Product Feedback - Apple
Outside of that, what are your use cases that are causing issues?
-Playing Apple Music natively and the music stops playing?
-AirPlaying to the HomePod from your iPhone?
-Requests to Siri not giving responses or not completing the requested action?
I'd definitely look at Wi-Fi to see if the throughput with HomePod is having issues. Channel selection, antenna/placement, I've even heard of (though not seen personally) of electronic devices such as lamps near HomePod causing issue.