Losing hashes (From 730-690)

I’m mining zcash with EWBF’s 3.4 miner on a 1080 Ti through Nanopool and it looks like they’ve been under reporting or losing(?) somewhere between 20-40 Sols/s for the past couple of days. Miner has actually been getting less sols/s as well, but that doesn’t account for the different average reported by nicehash (it’s lower).

Has anyone else had this issue? Or is it something on my end?