Hello.
There are many TCP connections to the API port 4068 with External miner manager.
> netstat -ao | find "4068" | more
TCP 127.0.0.1:4068 apps:0 LISTENING 9800
TCP 127.0.0.1:4068 na1r:51016 TIME_WAIT 0
TCP 127.0.0.1:4068 na1r:51017 TIME_WAIT 0
TCP 127.0.0.1:4068 na1r:51018 TIME_WAIT 0
[...]
The same problem with Profit miner manager to the port 4030
> netstat -ao | find "4030" | more
TCP 0.0.0.0:4030 apps:0 LISTENING 8664
TCP 127.0.0.1:4030 na1r:50301 TIME_WAIT 0
TCP 127.0.0.1:4030 na1r:50302 TIME_WAIT 0
TCP 127.0.0.1:4030 na1r:50303 TIME_WAIT 0
[..]
This is very critical to CPU usage! With Standart miner manager there is no such a problems.