kawpow+zil. Error stale shares for kawpow.

[brain-5]

I have problem with mine kawpow+zil (clore ai+zil), then to mine kawpow. All shares was stale after 1-2 days after start. But mining before one day is ok. The problem occurs on different PCs.

miner.exe ^
--pec 1 ^
--algo kawpow ^
--server stratum-eu.rplant.xyz:7083 ^
--user wallet.%computername% ^
--pass d=0.8 ^
--zilserver eu.zil.k1pool.com:1111 ^
--ziluser wallet.%computername%

Windows 10. GMiner v3.34.