Yes, memtweakit (of the right version) works. I am using 2.02.01 on my z590
But, when you change timings in Windows, you don't retrain the memory, so it often doesn't work well for tuning.
https://www.overclock.net/threads/official-intel-z690-z790-ddr4-daily-memory-overclock.1794799/#post...
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