dots ? in finish render

[dzes123456]

HELLO
I have question
do you know why in my render  I can see dots on left down corner ?
https://zapodaj.net/00ec078affc1b.jpg.html

Can you help my how can I fix this?

[maru]

Looks like there is too strong bump or too fine texture used for the water (too small details). The effect is that it's randomly catching strong sun disk reflections. Pretty much like here: https://coronarenderer.freshdesk.com/support/solutions/articles/5000529356