Well, you could try replacing PostMagic with the plugin below. It seems to handle the UV issue better in some cases. Otherwise, like Juno mentioned there's nothing you can really do on your end.
https://hub.virtamate.com/resources/post-processing.37521/
Are you using a post-processing plugin with bloom enabled? It looks like edges around the glove sleeves might have bad geometry which can cause this type of issue with bloom. If it's PostMagic you can try enabling the anti flicker setting, it might fix the lights but the black artifacts will...
Probably best to go with hazmhox's advice, but if you can find or make a custom shader with face culling changed to double sided you could use that with the Custom Shader Loader plugin.
Are you enabling/disabling "AcceptTrigger" on the Relay? If you're disabling the plugin itself instead it will actually still function for the most part.
The setting you'd want to increase would be spring rather than damper. If you don't want to change the nodes to "On" for Timeline, you could try changing them to "Comply" and increasing the Comply Position/Rotation Spring.