PfSense on Virtualbox gets disconnected

[jslegers]

Hello,

I'm making a test virtuallab with Virtualbox. I have red an article about building a virtuallab with the use of pfsense as a router.
I have installed pfsense on virtualbox with 2 network adapters. WAN is bridged on my host nic with IP 192.168.1.80/24 LAN is an internal network 172.16.10.254/24. The installation of pfSense went without problems. When I install a Windows 2012 Server and set pfsense as gateway it works correct. But I have a strange problem. I have an 120 Mbit Cable (Ziggo Netherlands) connection. I have done some tests on my test machine but the speed is not running on full speed. I also get disconnects. When I try to download a 1Gb test file from the internet it stops after a while. The speed drops and then the download stops. The Windows Updates also take a very long time.

Interfaces are set to 1000Mbit Full Duplex.

I don't understand what the problem is.
My modem is set to router.

Is this a known issue or am I missing something?

pfsense is running on Virtual Box 4.3.26 and has 256Mb ram and 2Gb disk.

[jslegers]

I have done some testing and found out that it happens on HTTP downloads.
When I download a file from a FTP server the connection stays normal.

When I do a speedtest.net the test can't run full and stops with an error.
This looks like the problem I'm having.

[KOM]

The Windows Updates also take a very long time.

Well, this is pretty much the normal case for everyone  ;D

Are you running any extra packages like Snort or Squid etc?

Anything in your System logs, including the Gateway log?

[jslegers]

Hello. I have no extra packages installed. Just a normal install to let it work like a router.
The log files I have to check.

I have also installed smoothwall as test and it doesn't have much troubles with speed test.net