I've been trying to mine zen and zcl on suprnova the past 24hrs, but I keep getting random connection closed by servers. I'm using dstm 5.7, has anyone else ever had this issue? Is it an issue with my miner or with suprnova?

Myself and a few others have the same issue. It's always with GPU0. It's not a hardware issue because it will perform fine in Windows, and doesn't make sense that others would have the same issue with only GPU0. Sadly, I haven't received any advice on how to resolve it or acknowledgement that anyone is listening to our issue.

I tried the newest version of SMOS and it seems to be working much better. My GTX 1070tis now get recognized by name, but I still have the issue of GPU0 running at about 80% or less than what it should be. I've tried switching PCI slots and miners, but the same issue occurs. I have an 8 gpu Rig with 6 1060s and 2 1070tis. I'm using the Asus expert mining board, and when testing in Windows everything works fine. So I don't think it's a hardware problem. Tested Equihash with both dstm and ewbf

GPU3 39C Sol/s: 490.1 Sol/W: 4.48 Avg: 493.1 I/s: 263.7 Sh: 1.83 1.00 124
GPU2 45C Sol/s: 302.9 Sol/W: 3.37 Avg: 302.2 I/s: 161.5 Sh: 0.00 . .
GPU0 36C Sol/s: 410.4 Sol/W: 4.40 Avg: 396.4 I/s: 213.5 Sh: 1.00 1.00 127
GPU4 49C Sol/s: 305.7 Sol/W: 3.40 Avg: 304.9 I/s: 163.1 Sh: 2.16 1.00 127
GPU5 46C Sol/s: 300.2 Sol/W: 3.40 Avg: 305.1 I/s: 162.5 Sh: 1.99 1.00 204
GPU1 54C Sol/s: 327.3 Sol/W: 2.93 Avg: 321.0 I/s: 171.4 Sh: 0.83 1.00 127
GPU6 43C Sol/s: 302.9 Sol/W: 3.39 Avg: 302.6 I/s: 162.2 Sh: 1.33 1.00 126

GPU0 and GPU3 are both 1070tis with the same overclock settings.
200 core
710 memory
110 wattage

I'm using the Asus miner board myself with 8 GPUs (2 1070ti, 6 1060s) and I have the same exact issue. All cards run great except GPU0 which happens to be a 1070ti. It runs about 80 to 100 sols slower than the other 1070ti with the same overclock settings.