benchmark is your theoretical maxspeed, depending on hash and input you can provide
for fast hashes like md5 this can be a hard task, especially when having 8 cards, see wiki for more infos
https://hashcat.net/wiki/doku.php?id=fre...full_speed
in your case i would assume providing each card with a uniq mask on their own will result in a better performance as now the passwords candidates are generated and splitted to your cards
OR
regarding your posted infos i would do a test-run with your mask and only 3-4 cards, maybe this way you will get closer to your maximum per card and you have the other 4 free to do another mask or job
and for timeout, yeah please install the patch as mentioned
https://hashcat.net/q/timeoutpatch
for fast hashes like md5 this can be a hard task, especially when having 8 cards, see wiki for more infos
https://hashcat.net/wiki/doku.php?id=fre...full_speed
in your case i would assume providing each card with a uniq mask on their own will result in a better performance as now the passwords candidates are generated and splitted to your cards
OR
regarding your posted infos i would do a test-run with your mask and only 3-4 cards, maybe this way you will get closer to your maximum per card and you have the other 4 free to do another mask or job
and for timeout, yeah please install the patch as mentioned
https://hashcat.net/q/timeoutpatch