Does your website not support showing a hash rate below 1 H/s? I checked GRIN profitability on other websites and it seems like there is quite a huge difference between your data and theirs. I assume your code round the hash rate up, or it can't show any lower than 1 H/s, but then your 2080 TI is ok, while the rest is not. Maybe you should double-check it since most GPUs don't reach 1 H/s even at max TBP according to other sources.