I'm using Fabric API 0.42.1 with Origins 1.1.4

It doesn't happen when you only have the Human origin.

Here's some spikage when mining some blocks:

Not very impactful by itself, but still interesting.

Here's the more pressing concern:

I'm using the Arachnid origin for testing.
Here I'm running bare minimum graphics (fast, 2 chunks, 0 mipmap, no smooth lighting) and getting some weirdly big spikage.

Now here's where it gets bonkers:

Using the Human origin, I don't get the same spikage. This is the same set of graphics settings and in the same world not far from the first test.

This ain't a one-off thing either, I've experienced this loads while optimizing my add-on. It drove me bonkers cause I thought it was my fault!

Also, in extreme cases, the log is spammed with this: