Over an hour? Wow, I haven't had any images under an hour in a long time... On average my renders take about 8 hours. The longest one I did was 5 days, but my computer is pretty able. Since then I have learned to optimize, using propper RPP's and compensations for TA which usually more than doubles render times. Anything that will be out of focus can be rendered once in a standard render all alone, then added in as a 2 dimensional plane. Or simply added after. Volumetrics I try to avoid like the plague. Bryce is just no good at them. levels of lattices with alpha maps usually suffice the task. Glass or transparent materials can greatly increase render time. Glasses and true ambience even more so... Lights, if any single light does not change the effectiveness of an image, get rid of it. It's just wasted space. In my most recent realism render I only used 5 lights and no True ambience. But you can achieve a similar effect. Shadowdragonlord is right, it's all about optimization. Usually I render a single pass, and sometimes it starts out at 3 days. However, I am usually able to get this down to 5-10 hours. (I do all my renders overnight so really it makes no difference to me if it's 1 hour or 10.)