The latest releases of Bminer 14.1.0 and NBMiner 14.0 have announced pretty impressive performance increases regarding Bytom (BTM) mining hashrate on the new Nvidia RTX series of GPUs with up to about 200% boost, so a significant improvement indeed. This essentially makes the RTX series of GPUs the best choice for BTM mining with two to tree times faster hashrates compared to what their older GTX counterparts are able to deliver at the moment.
Another new improvement that goes for both miners is the additional performance improvement in the range of about 30% for GRIN mining with hashrates very close for the two miners. Bminer also brings similar performance improvement for Aethernity like for Grin. So make sure you do try them both to see what may work better on your specific GPUs and settings if you are currently mining GRIN. Our tests are showing that the latest GMiner 1.25 still seems slightly faster on GTX 1080 Ti GPUs compared to what we are getting on the same hardware with the latest BMiner and NBMiner, so make sure you check out the latest Gminer as well.