Large env maps...

[Njen]

I just wanted to confirm if there should be a direct correlation to an increase of render time depending on the size of the env map used for lighting/reflections/etc. I have done tests where I used a 1k map vs a 16k map, and on average, the 1k map is about 9% faster.

Does this seem about right?

[Ondra]

yes, it does. Larger map means more cache misses when sampling it

[Fluss]

Also don't use the standard bitmap loader to load the HDRI. Use coronabitmap instead, I experienced almost 40% performance hit by using max bitmap loader