Hi, Hopefully someone has had this fault before, basically regardless of network adapter type when in bridge mode I get sluggish download, 5-10mbps on say a speed test website with 480Mbps upload speed (internet is 500Mbps both ways). If I switch the adapter into shared mode I receive similar speeds both ways. I tested uploading some files to the virtual machine and 1Gb file takes about 5-15 minutes, downloading the file off a network share on the virtual machine takes around a minute. I'm running the latest version of Parallels Desktop 14 on Mac OS 10.12. Removed network adapter in windows, reset to default the adapter in preferences under parallels, adjusted system optimisation to no limit, added in network conditions under the adapter settings all of which does not seem to help. If I adjust individual network adapter settings under device manager going through all options, nothing at all makes a single bit of difference. I'm using HP switches so don't think the Cisco thing is an issue (although it was working absolutely fine) and no updates have been done from the switches. Any help would be appreciated.