I have very slow render times in cycles. I have done the BMW27 speed test and got this ( 8x8 = 19 min 3 sec, 16x16 = 19 min 3 sec, 32x32 = 19 min 43 sec, 64x64 = 19 min 34 sec, 128x128 = 20 min 4 sec, 256x256 = 24 min 3 sec, ) whit standard settings my pc specs are intel i7 870(2.8ghz, overclocked to 3.2ghz), 12gb ram, AMD radeon r9 270.(GPU does not work) how can I fix it? Duarte Farrajota Ramos, my question is different because i am using the BMW file without setting changes to see how fast my render times are.
How to reduce render time
- Reduce light bounces
- Use Portals
How to: If you have windows in your scene, you can Shift+A to add an area lamp. Go into the lamp settings Then put a check in portals
- Reduce samples.
How to: In the render tab open the samples section and reduce the render samples
I got this info from this video on how to speed up render time.
Hope this helps!