Is it conceivable that a poor internet connection leads to a higher rejected share ratio?
more likely overclock or pool/server itself. if the algo is supported on another miner you can try that as well.
Hi is there any issue with hiveos? stats ar not worling anymore
There was an issue earlier with he default api server, if your rigs are showing offline you may need to change the mirror url in the menu to api.hiveos.farm and set
Error
failed to register ASIC Hub on HiveOS: WorkerAPI: 504 Gateway Time-out (server: http://api.hiveos.farm)