im have "JSON-RPS problem" I sink im lose hashrate due-to "JSON-RPS problem"
Other pool ~100 mhs . This around~70mhs
proxy edited
2016-01-30 00:51:44,410 INFO proxy # MAIN NEW_JOB
2016-01-30 00:51:45,319 INFO proxy # MAIN eth_submitWork by Ti
2016-01-30 00:51:45,539 INFO proxy # MAIN NEW_JOB
2016-01-30 00:51:45,960 INFO proxy # MAIN NEW_JOB

ethminer -G -F http://127.0.0.1:8546/R280x --farm-recheck 250   --cl-local-work 128 --cl-global-work 16384
miner  00:53:25|main  Mining on PoWhash #a85f1638тAж : 49344752 H/s = 12582912 hashes / 0.255 s
miner  00:53:25|main  Mining on PoWhash #a85f1638тAж : 41120627 H/s = 10485760 hashes / 0.255 s
miner  00:53:25|main  Mining on PoWhash #a85f1638тAж : 41120627 H/s = 10485760 hashes / 0.255 s
JSON-RPC problem. Probably couldn't connect. Retrying in 1...
miner  00:53:27|main  Mining on PoWhash #a85f1638тAж : 45793889 H/s = 92274688 hashes / 2.015 s
miner  00:53:27|main  Got work package:
miner  00:53:27|main    Header-hash: 35bb078984408f9f313062d262da23a8b47fd9ea6a11ac70588810e91ba9eb8
1
miner  00:53:27|main    Seedhash: 1842cb89c0dfad7efb5ce2bf93f418e369214e9e1773a1bfe7c9c72ceee682bb
miner  00:53:27|main    Target: 0000000394427b08175efa9a9eb59b9123e2969bf19bf272b20787ed022fbe6c
  i  00:53:27|gpuminer0  workLoop 1 #1842cb89тAж #1842cb89тAж
  i  00:53:27|gpuminer1  workLoop 1 #1842cb89тAж #1842cb89тAж
miner  00:53:28|main  Mining on PoWhash #35bb0789тAж : 25165824 H/s = 6291456 hashes / 0.25 s
miner  00:53:28|main  Mining on PoWhash #35bb0789тAж : 41120627 H/s = 10485760 hashes / 0.255 s
JSON-RPC problem. Probably couldn't connect. Retrying in 1...
miner  00:53:30|main  Mining on PoWhash #35bb0789тAж : 46603377 H/s = 94371840 hashes / 2.025 s
JSON-RPC problem. Probably couldn't connect. Retrying in 1...
miner  00:53:32|main  Mining on PoWhash #35bb0789тAж : 18641351 H/s = 37748736 hashes / 2.025 s
miner  00:53:32|main  Mining on PoWhash #35bb0789тAж : 0 H/s = 0 hashes / 0.265 s
miner  00:53:32|main  Mining on PoWhash #35bb0789тAж : 0 H/s = 0 hashes / 0.26 s
miner  00:53:33|main  Mining on PoWhash #35bb0789тAж : 0 H/s = 0 hashes / 0.26 s
miner  00:53:33|main  Mining on PoWhash #35bb0789тAж : 0 H/s = 0 hashes / 0.26 s
//============== second later when proxy update
miner  00:54:01|main  Mining on PoWhash #35bb0789тAж : 0 H/s = 0 hashes / 0.255 s
miner  00:54:01|main  Got work package:
miner  00:54:01|main    Header-hash: 7b2e1047688635ab98f2491ec8851b158c474bcf6ad741391d56990108bca1e
b
miner  00:54:01|main    Seedhash: 1842cb89c0dfad7efb5ce2bf93f418e369214e9e1773a1bfe7c9c72ceee682bb
miner  00:54:01|main    Target: 0000000394427b08175efa9a9eb59b9123e2969bf19bf272b20787ed022fbe6c
 !   00:54:01|gpuminer0  Worker stopping 29160 ms
  i  00:54:01|gpuminer0  workLoop 1 #1842cb89тAж #1842cb89тAж
 !   00:54:01|gpuminer1  Worker stopping 29180 ms
  i  00:54:01|gpuminer1  workLoop 1 #1842cb89тAж #1842cb89тAж
miner  00:54:01|main  Mining on PoWhash #7b2e1047тAж : 16777216 H/s = 4194304 hashes / 0.25 s
miner  00:54:01|main  Mining on PoWhash #7b2e1047тAж : 41120627 H/s = 10485760 hashes / 0.255 s
miner  00:54:01|main  Mining on PoWhash #7b2e1047тAж : 41120627 H/s = 10485760 hashes / 0.255 s
miner  00:54:02|main  Mining on PoWhash #7b2e1047тAж : 49344752 H/s = 12582912 hashes / 0.255 s
miner  00:54:02|main  Mining on PoWhash #7b2e1047тAж : 41120627 H/s = 10485760 hashes / 0.255 s

WHY proxy dont have work?