Even a tiny undervolt on RTX 5070ti gives micro stutters?

I can't figure out if it's just in my head, but I'm pretty sure I get micro stutters even at small UVs. I both feel them and I believe I see more spikes in my frametime graph. Across multiple games.

Doing just a +200 offset at 1V seems to make it happen. Memory at +1000MHz. Every single piece of information I can find tells me this is quite far within the limits of being stable.