Plex Transcoding with low cost slow CPU

I have Ubuntu 16.04.1 LTS on this low power SoC board Asrock N3150DC-ITX with N3150 CPU:
http://ark.intel.com/products/87258/Intel-Celeron-Processor-N3150-2M-Cache-up-to-2_08-GHz

According to https://support.plex.tv/hc/en-us/articles/201774043-What-kind-of-CPU-do-I-need-for-my-Server- (see The Guideline) I quote:
Very roughly speaking, for a single full-transcode of a video, the following PassMark scores are a good guideline for a requirement: 1080p/10Mbps: 2000 PassMark 720p/4Mbps: 1500 PassMark
I found my CPU on one of Plex's pointed charts: http://cpubenchmark.net/midlow_range_cpus.html When you click on CPU's link in the chart it will get you to http://cpubenchmark.net/cpu.php?cpu=Intel+Celeron+N3150+%40+1.60GHz&id=2546 from where I quote:
Description: Socket: FCBGA1170 Clockspeed: 1.6 GHz Turbo Speed: 2.1 GHz No of Cores: 4 Max TDP: 6 W Average CPU Mark 1693
With only 1693 mark you'll say there's no way this lazy CPU to transcode a HEVC ... but there is! You'll have to mount a RAM directory in /etc/fstab e.g.: tmpfs /var/plex-transcoding-temporary-dir tmpfs defaults,relatime,mode=1777,size=99G This line will mount 99 GB of your RAM (surely much less 99 GB) to /var/plex-transcoding-temporary-dir directory which then you'll have to configure as the Plex's transcoder temporary directory. I have 16 GB RAM but while transcoding a 1080p HVEC I only need less 2 GB RAM while also keeping in RAM my Ubuntu 16.04 desktop with mysql, sickrage, couchpotato, transmission, nginx and other. Plex uses a maximum transcoding cache of 100 MB so I guess it won't use more than 100 MB of your RAM for transcoding. Plex won't transcode a movie larger than your tmpfs RAM directory size so I declare 99 GB just to be sure to transcode any possible movie. My transcoding options: Transcoder quality: automatic Transcoder temporary directory: /var/plex-transcoding-temporary-dir Background transcoding x264 preset: faster Maximum simultaneous video transcode: 1 Amazing, isn't it?

Transmission on Ubuntu

Important files
/etc/init.d/transmission-daemon -> SysV service
/etc/default/transmission-daemon -> run by /etc/init.d/transmission-daemon
/********/.config/transmission-daemon -> CONFIG_DIR in /etc/default/transmission-daemon
/********/.config/transmission-daemon/settings.json

User and Group running transmission-daemon
change to desired ones (e.g. USER=************) in /etc/init.d/transmission-daemon

Yahoo certificate error

ERROR (ubuntu + chromium)
https://forums.yahoo.net/t5/Errors/NET-ERR-CERTIFICATE-TRANSPARENCY-REQUIRED-on-chromium-53/m-p/141922/highlight/true#M36857
ERR_CERTIFICATE_TRANSPARENCY_REQUIRED
You cannot visit mail.yahoo.com right now because the website uses HSTS.
SOLUTION (no logic here but working at 16 Nov 2016)
https://www.quora.com/How-do-you-fix-the-privacy-error-in-Chrome-Your-connection-is-not-private
On the page displaying this error, click anywhere on the page where the click won't have any action (just to focus the page). Type badidea and voila! You'll be automatically redirected to the destined page. This works sometimes with other sites too.