Got my Taichi last night and put my system together. Seem to have hit a wall @3.8GHz, Vcore 1.35, VSOC 1.05, both LLC2.
Ram is this https://www.overclockers.co.uk/corsair-vengeance-lpx-16gb-2x8gb-ddr4-pc4-25600c16-3200mhz-dual-channel-kit-black-cmk16gx4m2b32-my-456-cs.html and doesnt seem to...