Time Series Deletion Taking Longer Than Expected

Hello! I have a time series collection with a granularity of minutes and recently found that it takes over a second to delete even 10 minutes of data. I did some profiling and found that the Deletes do use indexes to fetch the time series buckets but the TS_MODIFY stage takes a couple of seconds. I’ve been trying to see why that could be and the only thing I could think of was that Mongo unpacks the bucket(s), rewrite the bucket without the removed data, and remakes the buckets. Is that accurate? I tried looking into the documentation to see if there’s any additional information or insight into this process but I couldn’t really find anything. Any info or help would be very much appreciated!