I run a Fury, 390 and a 280 rig and happened on every one.

I've had similar issues, but always in Claymore ZEC Miner, now nothing at all changed on my end, worked fine for ages and then suddenly all these issues, disconnects, periods of rejected shares etc.

Thanks for the tip! I'll give it a go, also for some reason Windows had just decided that after 3 weeks of mining it would block the miner which is why I got disconnects, thanks for the help Claymore!

Edit: seems to be working much better now, my 280 which has stability issues before seems to be better too.

Which logfile is this? The Nicehash one Named "log" or "log1"?

I'm getting a lot of issues with the Claymore miner within NiceHash in the past week, anyone else getting this?

This happens on 3 separate rigs running different cards, Furys, 280 and 390.

What often happens is periods of rejected shares even though the cards are rock solid stable and periods of disconnects/timeouts, I've tried switching regions but the same issue. If I switch miners I get no issues, but of course Claymore is the best performing.

Hi I was wondering what Tonga users are using for the drivers, I've tried about 6 different drivers and they all crash with Claymore, any advice welcome.

GPU's MODEL NAME: Sapphire R9 Nano
VRAM: 4GB
CORE/MEMORY CLOCK: 1000MHZ (undervolted by 42mv, +20% Power limit required for stable 1000mhz) 500MHZ Memory clock
HASHRATE: 445h/S
MINER SOFTWARE: Claymore ZECMiner (Nicehash)
OS: Windows 7

GPU's MODEL NAME: Sapphire R9 Nano
VRAM: 4GB
CORE/MEMORY CLOCK: 1075MHZ (undervolted by 42mv, +50% power limit) 500MHZ Memory clock
HASHRATE: 465h/S
MINER SOFTWARE: Claymore ZECMiner (Nicehash)
OS: Windows 7

Notes: 100% fan speed required running around 80c, the 75mhz increase and power limit + stock mv drew an extra 50w from the wall

EDIT to this and previous entries

Received a plug in power monitor

Total system 60W idle (1 GPU)

Total system readings, not just GPU

Sapphire Fury Tri-x OC at 1000mhz with -72mv ClaymoreZECminer 440H/s = 242W 
Sapphire Fury Tri-x OC at 1100mhz ClaymoreZECminer 480H/s = 298W
Sapphire R9 Nano at 1000mhz with -42mv and +20% powerlimit = 240W
Sapphire R9 Nano at 1075mhz -42mv and +50% powerlimit = 300W

GPU's MODEL NAME: Sapphire Fury Tri-x OC
VRAM: 4GB
CORE/MEMORY CLOCK: 1000MHZ (undervolted by 72mv) 500MHZ Memory clock
HASHRATE: 440h/S
MINER SOFTWARE: Claymore ZECMiner
OS: Windows 7

GPU's MODEL NAME: Sapphire Fury Tri-x OC
VRAM: 4GB
CORE/MEMORY CLOCK: 1100MHZ (Stock mv) 525MHZ Memory clock
HASHRATE: 480h/S
MINER SOFTWARE: Claymore ZECMiner
OS: Windows 7

Getting 440h/s at 1000mhz clock on a Fury (undervolted), only cost £200, pretty much the same price as a RX480 yet getting double the hashrate, at full pelt 1125 clock I can hit near 500h/s

I just took delivery of two Furys...

Currently doing Nicehash equihash, but noticing the price dropping big time, also seeing a few people saying how zcash will be a bit of a flash in the pan.

Is there anything more 'long term' I could be mining that would be a bit more 'steadier'.

Thanks for any advice.

I have a Sapphire Fury and I haven't found the limits yet but did a few simple changes and this is what I get on Claymore Zcash

-72mv 1000mhz core 500mhz Vram 440H/s runs at 55c at 60% fan

1100mhz core 525mhz Vram 480H/s running around 63c a about 70% fan

Hope this helps, getting a power monitor soon so I'll see the difference in power draw soon, I got it the same price used as a RX480 so it is great value.

Total mining noob here, but using a Sapphire Fury Nitro oc and thought I'd chime in

The two settings I go for are -96mv 1000mhz clock 500mhz ram and get 440 H/s using claymore. (Zcash)

I've got a lazy oc profile as well stock mv 1100mhz clock and 525mhz ram and I get 480 H/s (Zcash)

On those two profiles I didn't even try to find the limits yet either, I just dialled them in straight and they worked, could potentially push them further but haven't bothered yet.

Sadly as of yet I can't tell what my power draw is, also got another Fury on the way, managed to pick them up for the same price as a RX580.

Hope this helps