1. Known issue:

1.1: Background: 

In Movie Mode, the camera pauses at every keyframe in Clips in Lumion 10.3.

1.2: Who is affected: 

It affects anyone who is using Lumion 10.3.

1.3: Solution:

Install Lumion 10.3.2 or newer to resolve the problem.

Alternatively, the following hotfix also resolves the problem:

• Knowledge Base: Lumion 10.3.0.1: Hotfix for Lumion 10.3