[Copying] for a long time

[Mem5]

Hi,

Cmd line:
hashcat64.exe -m 120 -a 6 -w 4 -O D:\dic.txt ?a?a?a?a?a?a

Status...........: Running
Hash.Type........: sha1($salt.$pass)
Hash.Target......: xxx
Time.Started.....: Mon May 07 19:02:31 2018 (42 mins, 50 secs)
Time.Estimated...: Wed May 09 03:51:10 2018 (1 day, 8 hours)
Guess.Base.......: File (xxx), Left Side
Guess.Mod........: Mask (?a?a?a?a?a?a) [6], Right Side
Guess.Queue.Base.: 1/1 (100.00%)
Guess.Queue.Mod..: 5/7 (71.43%)
Speed.Dev.#1.....: 33540.4 kH/s (2.01ms) @ Accel:64 Loops:1024 Thr:896 Vec:1
Speed.Dev.#2.....:        0 H/s (0.00ms) @ Accel:128 Loops:1024 Thr:896 Vec:1
Speed.Dev.#3.....:        0 H/s (0.00ms) @ Accel:64 Loops:1024 Thr:896 Vec:1
Speed.Dev.#*.....: 33540.4 kH/s
Recovered........: 0/1 (0.00%) Digests, 0/1 (0.00%) Salts
Progress.........: 814743552/3961758400000 (0.02%)
Rejected.........: 0/814743552 (0.00%)
Restore.Point....: 0/512 (0.00%)
Candidates.#1....: xxx -> xxx
Candidates.#2....: [Copying]
Candidates.#3....: [Copying]
HWMon.Dev.#1.....: Temp: 55c Fan:  0% Util: 13% Core:1936MHz Mem:4513MHz Bus:1
HWMon.Dev.#2.....: Temp: 53c Fan: 22% Util:  0% Core: 164MHz Mem: 405MHz Bus:1
HWMon.Dev.#3.....: Temp: 49c Fan:  0% Util:  0% Core: 177MHz Mem: 405MHz Bus:1

Any idea why the 2 other cards do not work ?

The left side is a dic of 500 words -> not enough?
The right side is a 6*?a -> I guess it's enough
Keypsace is 376367048000000 which is enough work, no?

Thanks.