Dual channel didn't work on this motherboard. No post with RAM in channel A. Checked the CPU pins and two were bent so careful bent them back and dual channel now works! :
G.Skill Trident Z5 RGB Series (Intel XMP) 32GB (2 x 16GB) 288-Pin SDRAM DDR5
Anyone else having trouble with multiple sticks of ram (2)DDR5 GSKILL 16gb with Auros z690pro motherboard one works perfectly fine 2= bootloop from hell and random crashes : r/gigabyte
Why does my PC shut down on startup when using dual-channel memory configuration but the opposite when using only a single channel? - Quora
PC keeps crashing running dual channel RAM : r/AMDHelp
What's the difference between slot, bank and channel in a motherboard? - Quora