> 2. How exactly to use adc_bailout?


As Warp said, adc_bailout is buggy in POV-Ray 3.5. Don't bother with it
unless you're using the 3.6 beta.

As for your slow scene, I recommend you show us the scene file. Tricks to
speed it up will likely be specific to the scene and how you're doing things
within it.

10 light sources is a lot though; see if you can cut that down. Turning some
of them into spotlights, or using light_groups may help also.

 - Slime
 [ http://www.slimeland.com/ ]

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