From what I'm seeing on latest versions OCL kernels aren't biggest issue(might be wrong about that)...
env visibility cache and photongi + other stuff processing before rendering can be quite heavy on rendertimes.
Are there some plans to speedup render session startup? It became so slow it is really annoying at times, compared to competition(RPR, octane, corona, cycles)...
render session startup
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Please upload a testscene that allows developers to reproduce the problem, and attach some images.
Please upload a testscene that allows developers to reproduce the problem, and attach some images.