Brain working slow!!!

[erikass]

Hello guys

i`m trying recovery hash with brain but speed is very slow when attacking with brain . Why like that?

Session..........: hashcat (Brain Session/Attack:0xfbae2eb4/0x09cdb672)
Status...........: Running
Hash.Type........: MD5
Hash.Target......: c0e918876b12f3fe9be10ae2fd151372
Time.Started.....: Sat Nov 10 21:36:25 2018 (4 mins, 21 secs)
Time.Estimated...: Sat Nov 10 22:11:36 2018 (30 mins, 50 secs)
Guess.Mask.......: ?d?d?d?d?d?d?d [7]
Guess.Queue......: 1/1 (100.00%)
Speed.#1.........:     2877 H/s (1.05ms) @ Accel:1024 Loops:1 Thr:1 Vec:8
Recovered........: 0/1 (0.00%) Digests, 0/1 (0.00%) Salts
Progress.........: 4677632/10000000 (46.78%)
Rejected.........: 3928064/4677632 (83.98%)
Brain.Link.#1....: RX: 751.8 kB (0.03 Mbps), TX: 6.0 MB (0.25 Mbps), receiving
Restore.Point....: 4677632/10000000 (46.78%)
Restore.Sub.#1...: Salt:0 Amplifier:0-1 Iteration:0-1
Candidates.#1....: 5092460 -> 0286750