Very High Rejection Rate.. is that normal?

Hi everyone,

I am solo mining with some graphics cards (nvidia 1070 ti) and I have a couple quesitons.

I have 1 graphics card that is mining about 4x the rate of the others… not sure why?

Second quesiton is, I have a very high rejection rate, about 2:1 rejections to accepted shares, what could be the reason for that? I am solo mining the graphics card computer to a stratum server in the LAN but different computer.

***The last message received is “Failed to submit a solution: Failed to validate solution”

Thanks for any advice

EDIT: I’m using lolminer now and rejection rate is now negligible