yeah, I had played with all manner of bump/displacement settings and it did not matter if it was bump or displacement that was being set high, both gave the same strange reflections. I settled on lowering bump/displacement and messing with reflect amount and a contrasty map controling it.

W10, Ryzen 5 1600x, 16Gb,RTX2060Super+GTX980, PP11, 11.3.740