Hi!
I have subscribed to Bitdefender Total Security 2016, and I am noticing that the program has a process called "Bitdefender Agent (32-bit)" that is constantly using approx. 30% of the CPU. That causes the computer's fans to be active all the time. This isn't normal, is it? Is it really supposed to use that much of the CPU power?
In Bitdefender settings, I have the Shield on-access scanning set to custom, with "Scan all files" and "Scan network shares" checked, no scan inside archives, "Scan incoming/outgoing e-mails" and "Scan HTTP traffic" checked, "Scan boot sectors", "Scan only new and changed files", "Scan for keyloggers", and "Early boot scan" checked, and "Move files to quarantine" checked. I have Active Threat Control set to Normal. I thought that would be helpful information to give, but if you need any more information on my particular settings, just let me know. 
I really hope someone can help me with this. I want to use Bitdefender, but I think a constant 30% CPU usage is a little too excessive.