Network download speeds being throttled by 2/3 after latest preview build 22621.675 ni_release

After installation on 22621.675 all network adapter downloads are being throttled down by approximated 2/3 speed.  Other PC's not on in the insider build do not experience this issue nor do non-Windows devices.  My ISP service is 1Gbps download/40Mbps upload.  Previous download prior to installation wired was 987Mbps and is now 283Mbps.  Are others experiencing this?