I have some simular issues since i upgraded 2 printers with the hemera. But it's much less noticable but very noticable to me. My dad also upgraded to hemera and get exactly the same artifacts. Tried a lot of different settings for microstepping and current without any change. My hemeras are running on duet wifi and the one from my dad on a skr 1.3 with TMC2208 in stealthchop. I directly ordered my hemeras when they came available and my gears still look good without cracking.