I have both an iHost hub and the Moes gateway connected via Matter on my V3 hub. The Moes has suffered several disconnections, while the iHost has remained stable, so I’m inclined to think the issue lies with Tuya. Also as @Paul_Oliver noted, connecting the Moes is challenging—only by following his thread here was I able to get it working, using both my iPhone and SmartThings installed on an old Samsung tablet for the QR code.
In my experience, making the Matter connection is still not the simplicity it should be across all platforms.
EDIT PS 58.7 update this morning threw the Moes off for a short while (it’s only handling 3 devices) while the iHost (70+) didn’t notice it.