I agree with Juliasb and would add to make sure you use a needle made specifically for metallic thread. They have a larger eye and scarf. This blog will probably help.
https://quiltsocial.com/spotlite-6-t...estic-machine/
One last thing to add; if the metallic does give you fits, there are many trilobal poly embroidery threads on the market that have the look of metallic, especially gold. I especially like Glide in color Cleopatra. I used it in this quilt:
"Peony Fantasy" an Asian Panel quilt massively quilted