autotuning

[tomos]

Hi i used the following command:
hashcat64 -m 1400 --weak=0 findthathash.txt mywordlist.txt -o cracked.txt -d 1 --cpu-affinity=1,2,3

mywordlist.txt has 50.000.000 generated words that contains the correct password

when i run this command, i see non stop the status:  Autotuning, it not starting to compute...
where is the problem? how to speed up the finding my password?

thanks for the answers