Additional idea is to use separate network card on host and bridge to external switch not carrying local LAN traffic (defeats the purpose of LAN remote access). IOL/IOSv can't handle the rate, perhaps its better to isolate it from 'promiscuous' nature, which I tried to do by putting built in switch object between cloud and IOSv. If traffic volume and types of busy traffic is a problem, i.e.
Reason normally I would do this is to have VLAN 1 in GNS3 IOL/IOSv for management of switches over LAN, makes things much easier to remotely manage topologies and ssh. I have 'looked' at the traffic via wireshark, and since its bridged to local LAN of my host PC (Well GNS3 VM bridged to LAN), its everything the host (PC) sees (a lot) connected to local switch for home LAN (its TP Link managed switch).
