Low utilization with multi GPU

[cpu_pirate]

Have not tweaked any settings in Linux so the performance is down but just quick testing and the issue does not appear to follow, hitting 97% utilization on each card.

Session..........: hashcat
Status...........: Running
Hash.Type........: WPA-EAPOL-PBKDF2
Hash.Target......: /media/cpu_pirate/shared/Training/wireless/captures/Greenlight.hccapx
Time.Started.....: Thu Aug 16 09:52:20 2018 (1 min, 59 secs)
Time.Estimated...: Fri Mar 24 08:34:47 2248 (229 years, 219 days)
Guess.Mask.......: ?a?a?a?a?a?a?a?a [8]
Guess.Queue......: 1/1 (100.00%)
Speed.Dev.#1.....: 467.7 kH/s (6.49ms) @ Accel:32 Loops:16 Thr:1024 Vec:1
Speed.Dev.#2.....: 447.9 kH/s (6.79ms) @ Accel:32 Loops:16 Thr:1024 Vec:1
Speed.Dev.#*.....: 915.6 kH/s
Recovered........: 0/17 (0.00%) Digests, 0/1 (0.00%) Salts
Progress.........: 108265472/6634204312890625 (0.00%)
Rejected.........: 0/108265472 (0.00%)
Restore.Point....: 0/69833729609375 (0.00%)
Candidates.#1....: Zarierin -> Z:[olerd
Candidates.#2....: Y`=monan -> Y]/merin
HWMon.Dev.#1.....: Temp: 46c Fan: 0% Util: 96% Core:1847MHz Mem:5005MHz Bus:8
HWMon.Dev.#2.....: Temp: 50c Fan: 29% Util: 97% Core:1771MHz Mem:5005MHz Bus:8