Question Dimmable LED bulbs flickering

[King Mustard]

Argos Home Curico 4-Light Spotlight (767/2929)
4x Megaman 142600 light bulbs
Dimmable smart switch: https://www.ebay.co.uk/itm/165845195497
Tuya app

The bulbs slightly flicker (only slightly, but enough to be annoying).

When I used a non-dimmable smart switch (which of course meant off or 100%), there was no flickering.

Any idea where the issue could be?

 

[raykneale]

Hello
I had a similar problem with mine ,it seems the current passing through the smart switch ,(to keep it active) is enough to trigger a response in the bulbs all be it intermittently . I went back to a dumb switch as the easiest option ,but you could try higher voltage bulbs ,that might work ,but only guessing ,
Good Luck