Unreal Engine 5.1 | Awake - Trailer - Sc.4 - Metahuman Hair Lighting Problem

Hey All! I'm having several issues for this cinematic render, including: 1) lights flickering on / off or brighter during the sequence; 2) metahuman hair glowing or having an emissive quality; 3) metahuman hair flipping around (see background character) during sequence, and not settling properly; 4) lights illuminating inside metahuman mouths. Any thoughts on how to fix these problems would be greatly appreciated! 'Awake' is a feature film written by Andrew Palmer and Ian Weir. Synopsis: https://www.synapzproductions.com/_files/ugd/c30c78_9971148f025c40e2989f2539400b99b9.pdf Visit www.synapzproductions.com for more info! Edward & Jack were brought to life using @MovellaInc Awinda suits and #metahumancreator in @UnrealEngine 5.1 Facial performance recorded with an #iphone12 using Standard Deviation HMC and @FacewareTech for animation processing. Dialogue was recorded with @sennheiser lav mics and a @FocusriteTV Scarlett 2i2. Gray Matter Office designed by @helciopugliese and modeled by @AICineVerseStudios