It’s a very strange problem I’ve run into lately, I run two angles,
one good one comes out and the other is burning for some reason, I’ll be happy to help!
Looks like your material have too strong reflection or high bump. try to reduce glossiness or bump
https://coronarenderer.freshdesk.com/support/solutions/articles/5000529356-i-can-see-bright-pixels-in-grass-
this is funny on freshdesk examples for c4d and for 3ds max but on help.c4d only for c4d, why is that so? =)
Did you use the override reflection slot? It can produce a lot of fireflies when you have different HDRIs in global illumination and reflection slots.
yes hdri also may give fireflies if it was wrong calibrated, loaded via vrayhdri, or tweaked too much in output rollout