Using browser and multiple devices causing it all to crash..

Hello so, I'm looking for a new software to take over my needs.
Someone suggested serviio.
However I have some problems.
I'm Tech guy and it is my daily bread, so I know what i am doing when it comes to port forward, firewall rules etc..
So my problem
Whenever i use my tablet or my phone or my desktop at work at the same time for external IP with serviigo or internal it's causing serviio to stop working even on LAN.
Only solution is to reboot the entire machine and the network...
Restarting services causing it to failing starting the app.
Any solution for this?
I will of course pay for a license after my 15 days trials since I need the webbrowser, but if there's no solution or fixes incoming, I'm moving on to test other programs out there.
Someone suggested serviio.
However I have some problems.
I'm Tech guy and it is my daily bread, so I know what i am doing when it comes to port forward, firewall rules etc..
So my problem
Whenever i use my tablet or my phone or my desktop at work at the same time for external IP with serviigo or internal it's causing serviio to stop working even on LAN.
Only solution is to reboot the entire machine and the network...
Restarting services causing it to failing starting the app.
Any solution for this?
I will of course pay for a license after my 15 days trials since I need the webbrowser, but if there's no solution or fixes incoming, I'm moving on to test other programs out there.