pfSense

Hi,
i don´t really know where too look or how to debug my problem.
Six servers are connected to my local network via OpenVPN, the connection works most of the time flawlessly.
But once in a while (i couldn´t detect any pattern) none of the servers has an active connection and the webGUI refuses to load (infinity loading).
These two things always appear together, below is the system log of the time the problem occured.

1. Login via ssh
2. 16 (Restart PHP-FPM)
3. After that the webGUI works again, but openVPN is still down
4. 8 (Shell)
5. execute my openvpnrestart script
   

   #!/usr/local/bin/php -q
   <?php
   require_once('openvpn.inc');
   
   openvpn_resync_all();
   ?>
   

After these steps it takes about one minute, then all servers are connected again and continue to work as usual.
I had this problem over many versions back already, currently im running 2.3.4-RELEASE-p1

/var/log/system.log

Aug  3 03:52:26 pfSense ppp: [wan] IPCP: SendConfigReq #3
Aug  3 03:52:26 pfSense ppp: [wan]   IPADDR <insert my wan ip here>
Aug  3 03:52:26 pfSense ppp: [wan] IPCP: rec'd Configure Ack #3 (Ack-Sent)
Aug  3 03:52:26 pfSense ppp: [wan]   IPADDR <insert my wan ip here>
Aug  3 03:52:26 pfSense ppp: [wan] IPCP: state change Ack-Sent --> Opened
Aug  3 03:52:26 pfSense ppp: [wan] IPCP: LayerUp
Aug  3 03:52:26 pfSense ppp: [wan]   <first two groups of wan ip here>CLOG^A^@^@^@f<DF>^B^@<EC><CD>^G^@^@^@^@^@