I need a help in how to stress the network

salaam alikoom my brothers

I am connecting two networks via a router, I installed an FTP (filezilla ) on the PCs to transfer huge data from network1 to network2, this is just to stress the network.

the file size which i transfered is 4G byte .

the router interfaces support 100Mb/s, the problem is when i send the data (4G byte) over this network using filezilla , i can not stress the network because the filezilla seems to send few Killo bytes not Mega bytes over the linke althogh we have bandwidth of 100Mb/s

please can anyone tell me what to do? or if there is another software can send huge data like filezilla?

thank you

since the two networks are connected to the same router, it seems the problem caused by the PC running the filezilla
check the CPU and memory untilization
and check wheather the filezilla software is able to send such size (4G), it might be license issue