hackney slow on reading chunked reply of ~20mb about hackney HOT 1 OPEN

    N = 100,
    Start = erlang:system_time(microsecond),
    [begin
         {ok, _Code, _Headers, Ref} = hackney:request(get, Url, [], [], []),
         hackney:body(Ref)
    end
        || _X <- lists:seq(1, N)],
    Diff = erlang:system_time(microsecond) - Start,
    io:format("~p requests, total time: ~ps~n",[N, Diff/1000000]).

without chunks, Total size: 1301.7705078125KB
100 requests, total time: 0.649146s

Total size: 1301.7705078125KB, chunk size: 1024, chunks: 1302
100 requests, total time: 0.461806s

Total size: 1301.7705078125KB, chunk size: 10240, chunks: 131
100 requests, total time: 0.467853s

Total size: 1301.7705078125KB, chunk size: 102400, chunks: 14
100 requests, total time: 0.623883s

Total size: 1301.7705078125KB, chunk size: 1024000, chunks: 2
100 requests, total time: 9.556485s
---

Total size: 13096.701171875KB, chunk size: 1024000, chunks: 14
100 requests, total time: 53.445918s
vs
without chunks, Total size: 13096.701171875KB
100 requests, total time: 6.320183s