white spots on renderings

[eybl_eybl]

dear team,
do you know why i do have a lot of white spots on reflections on my rendering?
I read that should activate "subpixel mapping" and change the antialisaing filter into area, but the issue is still there.
Can anyone help?

thanks alot! BR

[eybl_eybl]

i zoomed into the area to have a besser visibility

[Micha]

Looks like there is a overbright source. I would disable or hide light sources/emitters step by step and look which source caused this effect.