ZeroNet\core\tools\tor\tor.exe is using 20% of the CPU

### Step 1: Please describe your environment

* ZeroNet version: 0.6.2 rev3502
* Operating system: W10
* Web browser: FF beta
* Tor status: available
* Opened port: no
* Special configuration: --multiuser_local

### Step 2: Describe the problem:

Hello, it is not rare when i see the ZeroNet\core\tools\tor\tor.exe is using roughly 20% (it is sustaned usage for like 15 minutes i am watching the process) of the CPU in Task manager and System Explorer.

Connections (195, total made: 23784)

The normal Tor.exe process probably launched by Tor browser that i am also running is not using any CPU.

Computer is recovered from sleep mode, if it can play any role.

Similar amount of CPU (20%) is using Firefox and sometimes also qBittorrent. It is strange that just Tor would need that much. I seen connections of the process in /stats page and in System Explorer and it is not large amount. I am not browsing ZeroNet atm, i have 250 sites, maybe more in the list. ~126 connected on newsfeed.

After trying to restart the tor.exe it not started so i clicked to update Zeronet and after start the tor.exe is using like 5% of the CPU which is OK.

首先，在 Windows 10 上重现 ZeroNet\core\tools\tor\tor.exe 持续占用 CPU 的情况，包括计算机从睡眠状态恢复之后，并检查 /stats 页面显示的连接。比较重启或更新 ZeroNet 前后的进程；完成的标准是找出并解决导致 CPU 长时间占用的条件。

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