Additionally, when I build for windows it looks like this:
(like the reflections and lighting is not working correctly)
I am using the 4.4.0 Preview, and have tried increasing the amount of memory available to the HTML5 build, which done nothing. I am running the HTML5 version in Nightly.
I have set the scalability options to their minimums and maximums through blueprints, but neither solves the problems.
For anyone else getting problems like these, I ended up solving it a bit.
The corrupted mesh I believe was caused because the polycount was too high, I had imported that as a test and it was 70,000 polygons. As separate meshes they no longer are corrupted/distorted.
The lack of reflections, I think, is just that the reflection is lower resolution and so it is more blurred and harder to see. I decreased the roughness of the metal to make the reflection more obvious and it was actually there, just low quality.