It seems like the REST API docs have been updated to support this:
https://github.com/quadlayers/perfect-woocommerce-brands/wiki/REST-API-docs
I hope this helps.
We are running into similar issues with the product batch endpoint. We are using offload media which is passing the image uploads to S3 on call. As a point of reference, we have around 20k users and 2k products. Whenever we use the REST API, the database CPU spikes up with only few connections and if not throttled, will eventually lead to 504s. I’ve been trying to optimize tables as a means to try and speed it up but to date I have yet to see any changes I’ve made actually make a significant impact in reducing the occurrence of this issue. We are also using w3 total cache but the wp-admin and rest api are not cached while the front end is redis cached.
