Ok, i`m trying to mine solo again. I found three blocks and three transactions have but in wallet i see only 10 coins. Why?
Two were orphaned... Eg, you didn't find them before another block was found, and the other block was accepted by more people first, over your block.
Eg, you found one at 12:00:15 and the other block by another miner was found at 12:00:10... and it had 6 confirms before yours got 5... You were just too far away to be "updated", as the block navigated the rooms. When that one got 6 confirms, your wallet removed your invalid coins from the "pending" status, and didn't deposit them into your wallet. Thus, you lost that lotto-drawing.
Remember, your miner talks to your own wallet faster than it talks to the network. After your miner finds a valid block, it passes it to the wallet, which then checks to see if it is actually valid, then it attempts to pass it to the network... then it has to be checked by 6 other wallets on the network, before any other block is sent from anyone else... That all takes time.
That is why I use a 64 workload size... I submit found blocks faster. Because I am not waiting 4x longer for a 256 workload to "finish", before I can submit it to my wallet for confirmation. Plus, workload 64 makes my miners run faster, on average. (I have low RAM. Like only 2GB total.)