Reduce Tick density for Tickmode 'array'

Hi all,

github redirected me here (

I’ve a surfaceplot - like shown here:

But I want to only show every second or third tick on x and y axis (nticks and dtick are not working as expected, already tried). Reducing the provided data is also not working, as this causes the hover data to be not shown correctly.

Do you have any advice on that?

thanks in advance,