You can set intensity to 20 on windows but I find that anything above 18 on multipools gives a higher reject rate.

Getting 75% rejections on my GPU miners and 7% or so on slow slow CPU miners while we're on XNC. One of the worst rejection rates I've seen so far with my miners.  Can't wait to jump off this coin.

We hit XNC with a big profitability hit but at over 700% profitability it's going to still come back on. To be honest everyone is having rejects with a coin like XNC which has very fast block times combined with low diff. It is still worth it to farm as you can see from you're estimated payouts. Compare it with a few other rounds with coins with lower rejects.

Definitely not a PPLNS as the time is too short.  If you want a Pool use a PPS pool (if that share will hit at the same time)
Personally I solo mine a coin.  I don't want to give up my coin as I don't want to have the hash rate shoot up   Pick one you think it will hit easily and use it as a backup.

Yes it is the coin/pool.  It may be that the latency to deliver between your miner --> stratum --> (multipool <--> Database) --> XNC Wallet --> XNC Network may be slow.  Since Hashco.ws is the multipool, could you add some debug timers to see how long it takes to process I/Os from Stratum to the XNC Wallet.  If possible, consider improving these figures.  I may be possible there are be some large latencies between stratum and the wallets; even 80ms may be too long.

I am not sure if the above structure is correct though.  If it is, it may be more efficient if Stratum directly connected with the Wallet if a Block was found, to reduce latency and relay over to Multipool instead of going through Multipool.

So if a block is found:

Miner<->

Stratum <->

Wallet <-> ^ | V Multipool

Coin Network

But when finding a share:

Miner<->

Stratum <->

Multipool <-> Database

Wallet <->

Coin Network

How does your current setup work Hashco.ws?

Well this seems disheartening...

Current Hashrate
1,991 Kh/s   

Accepted Shares
274

Rejected Shares
5   

Reject Rate
1.79 %

Est. Daily BTC Earnings
0.01106566         

Usually the "acceptable" BTC earnings is ~0.02 per Mh/s. This is 25% of what I would expect. I've only been mining for 12 hours, so maybe there's just something weird about the Daily BTC Earnings calculation.

What are others seeing when they go to https://hashco.ws/stats.php ?

Todays earnings are low because of BTC crash.
All alts took a dive.

LTC took huge dive as well, yet... if you were to mine ltc today you would have gotten more BTC per MH.

Glad Forum is back up...   How is HashCow doing?