According to this reason https://www.wilderssecurity.com/threads/audio-fingerprinting.386249/ I decided to try Cent Browser...it looks even good but today I discovered something what was quite alarming for me - ca 2-3 hours after closing CentBr I noticed few its processes that was still in work...see screenshot. Is it not a classic "memory-leak" especially looking at this explanation? http://forum.sysinternals.com/what-are-private-bytes_topic15333.html
Didn't know about this browser, reminds me a bit of a new Maxthon. But I can't help you with your question.
Do you have enabled an option "Continue running background apps when browser is closed"? You can try disabling it and see if it helps.
