AV-Comparatives - Performance Test April 2019

That sounds exciting. Tencent use 2 engines, their own and Bitdefenders. If it is so light as you say, it could be a winner. But a really light antivirus with Bitdefenders engine in it? What hocus pocus is involved?

Bullguard uses bitdefender enigine and is very light. Very very light in fact

McAfee and ESET TOP of performance

I can't imagine how Mcafee got this excellent performance score with its +30 processes!
 
I can't imagine how Mcafee got this excellent performance score with its +30 processes!
There are 15 processes. But, this doesn't impact performance when it's idle and they all have 0% CPU use. It's the same as a browser. Browsers don't use more CPU power when they use a separate process for each tab, rather than a single process.