Curious to know since you mentioned that it was fast for thousands of PDFs... any rough timing information on some of your queries for that kind of dataset?
I'm really reaching here to recall, but the short version is that actual searches never took more than a second. All I really cared about was how noticeable a delay to expect, and it was never more than that.
On a bulk import of 1,000+, it took a couple minutes to ingest them. This was all on a $20/month VPS.
On a bulk import of 1,000+, it took a couple minutes to ingest them. This was all on a $20/month VPS.