num_aligns = >1000 : Error in the HTTP2 framing layer

Hello,
Setting the `num_aligns` option of a search_primer_pair query above 1000 throws up the error

> Error in curl::curl_fetch_memory(url, handle = handle) : 
>>   Error in the HTTP2 framing layer

Is this error intended as a max limit? I couldn't find info on a maximum limit to the search, and the script does eventually output results after hanging for a bit.

Thank you
