Doubts regarding quality of these new bulbs

I am using a number of Shelly devices since several weeks, and overall the experience has been very good.

Since a couple a days, I have 5 of the RGBW bulbs. My results so far:

- 1 lamp stopped working on day 2, it will no longer power on at all.

- 2 lamps are losing connection regularly, and require powering off/on using the regular wall switch to start functioning again.

- 2 lamps, seem to be OK so far.

The 4 remaining (somewhat) operational lamps are all using firmware 20210413-153653/v1.10.2-gb89901a.

For 1 of the 2 lamps regularly losing its connection, I have changed it to "Static IP", replacing the static IP assigned to it by my DHCP server.

This has not resulted in an improvement, the lamp has gone back offline after a couple hours of uptime.