Only several days have passed since report was filled. I waited for a half of year to get a critical API fix in the LTS version. Like this one: AsyncGPUReadback.RequestIntoNativeArray causes InvalidOperationException on NativeArray
I don’t think any speedup is possible until QA will process the report. And even then it will be fixed for the latest TECH stream first, and backports will land after several more months of waiting.
It the previous versions of Unity HDRP was not tied to the editor, so we got fixes much much faster. Sadly, this is not the case anymore.