Hello Runxel, thanks for the reply. I checked those items and I have been rendering it instead of the preview.
I was not using the physical renderer (should I be?).
I've attached screenshots of my settings, I think the reflections are enabled and I have increased the Reflection Depth
ArchiCAD 24, 25 & 26 US
WINDOWS PC, 16GB RAM, Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz 3.40 GHZ, NVIDIA GEForce GTX 970, ASUS, CM6870, Rev X.0x