BitDefender is ass.
It will severely limit your upload/download speed, it will flag PIXELDRAIN and many other of the sites we use as malicious. I removed it long ago and my speeds improved both uploading and downloading.
Only thing is that Bitdefender embeds itself so deep it's a pain in the ass to get rid of.
There are no limits with a VPN, when your download hits the limit, pause, close the MEGASync app, change to a new location/IP and start app and continue download
Uncompressed version for what? Why?