Geo and Sky blue haze clipping plane

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Issue Description: when using large models, I am seeing this hardline of blue haze at a fixed distance from the camera position no matter what focal length, distance from model, etc. What is this, and how can I disable it, or make it at least a gradient instead of hard line? this does not occur when using an HDRI environment. Thanks!
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Steps to Reproduce (optional):

Hello! Really sorry for this issue. Could you please tell me which version of D5 did you use? Also, which modelling software did you use for this model? Are you currently using the Live Sync plugin to sync your models to D5? If so try converting the model to a non-realtime model in the object list.
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