I found a bug: if I start Claymore CryptoNight with some card and then start PhoenixMiner with all the other card then Phoenix crash...
I tried then to start first Phoenix and then Claymore and I saw the problem: I was using the same port (3333)... opsss I forgot to change it!

So if the port 3333 is busy PhoenixMiner crash.
I have also a request: can you add to the line of server name also the time when the connection occurred (or a counter)? I ask it because some time my internet connection go down and then up and I need to search on the log if this happened

*** 0:50 ***************************************************
Eth: Mining ETH on eth-eu1.nanopool.org:9999 from 13:00:00 07/04/2018
Eth speed: 183.484 MH/s, shares: 57/0/0, time: 0:50
I'm using your software from a few months and I'm very happy... I'm waiting for version 2.9!

For your first problem, try to grow your Virtual Memory, it happened to me when I tried to do that, I changed to 32000 (32MB) and it worked fine. I use that default now on all my miners.
For your other problem, port, on one of your miner's software (Phoenix for instance) you can change the port using -cdmport 3334 (changing it from 3333 which is the default to 3334)
Claymore has a flag to do the same.
Hope it helps
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Aurus
Donations: aurusmx.eth