I tried pointing mine at nicehash and had a near 100% rejection rate. Nanopool showed ~20khs instead of 220. Suprnova has been relatively straightforward with 230-300khs after it ramps up.
Anyone had any success with any of the other pools and the x3?
Same here - nicehash not working (0 accepted shares), nanopool showed 23khs instead of 230khs.
Now Im trying antpool - looks like it works well (xmc).
What do you mine at suprnova?