Adding Multiple Hosts to INET/OMNET++ Throughput Example - omnet++

Question

I have been working on adding more than one host to the INET throughput example.
inet/showcases/wireless/throughput
However, when I run the code after adding more hosts, the graph generated looks pretty similar to the original and I expected some sort of obvious difference - which leaves me to believe that there is something wrong with the code.
Original example code:
throughput.ini
[General]
[Config Throughput]
network = Throughput
sim-time-limit = 1s
*.*Host.ipv4.arp.typename = "GlobalArp"
*.*Host.wlan[*].mgmt.typename = "Ieee80211MgmtAdhoc"
*.*Host.wlan[*].agent.typename = ""
*.*Host.wlan[*].opMode = "g(erp)"
*.*Host.wlan[*].bitrate = ${bitrate = 6,9,12,18,24,36,48,54}Mbps
*.*Host.wlan[*].mac.dcf.originatorMacDataService.fragmentationPolicy.fragmentationThreshold = 2304B + 28B
*.*Host.wlan[*].radio.separateReceptionParts = true
*.*Host.wlan[*].radio.separateTransmissionParts = true
*.sourceHost.numApps = 1
*.sourceHost.app[0].typename = "UdpBasicApp"
*.sourceHost.app[*].destAddresses = "destinationHost"
*.sourceHost.app[*].destPort = 5000
*.sourceHost.app[*].packetName = "UDPData-"
*.sourceHost.app[*].startTime = 0s
*.sourceHost.app[*].messageLength = ${packetLength = 100, 1000, 2268}byte
*.sourceHost.app[*].sendInterval = ${packetLength} * 8 / ${bitrate} * 1us
*.destinationHost.numApps = 1
*.destinationHost.app[0].typename = "UdpSink"
*.destinationHost.app[*].localPort = 5000
throughput.ned
package inet.showcases.wireless.throughput;
import inet.networklayer.configurator.ipv4.Ipv4NetworkConfigurator;
import inet.node.inet.WirelessHost;
import inet.physicallayer.ieee80211.packetlevel.Ieee80211ScalarRadioMedium;
network Throughput
{
#display("bgb=6,4");
#statistic[throughput](source=liveThroughput(destinationHost.app[0].packetReceived)/1000000; record=figure; targetFigure=panel.throughput; checkSignals=false);
#statistic[numRcvdPk](source=count(destinationHost.app[0].packetReceived); record=figure; targetFigure=panel.numRcvdPkCounter; checkSignals=false);
#figure[panel](type=panel; pos=1.5,0.1);
// #figure[panel.throughput](type=gauge; pos=0,0; size=100,100; minValue=0; maxValue=40; tickSize=5; label="App level throughput [Mbps]");
#figure[panel.throughput](type=linearGauge; pos=250,50; size=250,30; minValue=0; maxValue=54; tickSize=6; label="Application level throughput [Mbps]");
#figure[panel.numRcvdPkCounter](type=counter; pos=50,50; label="Packets received"; decimalPlaces=6);
submodules:
sourceHost: WirelessHost {
#display("p=3.019269,2.746169");
}
destinationHost: WirelessHost {
#display("p=4.369595,1.8054924");
}
configurator: Ipv4NetworkConfigurator {
#display("p=1.0772266,0.6220604");
}
radioMedium: Ieee80211ScalarRadioMedium {
#display("p=1.03171,1.9723867");
}
}
The way I did it was copying the source host submodule in throughput.ned and giving it a name like sourceHost2. Then, I modified the ini file to accommodate for the changes for example, changing
*.*Host.ipv4.arp.typename = "GlobalArp"
to
*.*Host*.ipv4.arp.typename = "GlobalArp"
This runs fine but does not really change the throughput at all - one or two slightly harsher peaks/troughs in the graphs but nothing noticeable - any ideas?