[HiassofT]

I can't even get smooth playback with 720p. I noticed that one core is at 100% the others are not really used at all but perhaps that's just the way it is with software decoding.

Can we expect any kind of change here or will HD playback not really be available for rpi owners? 

On the RPi3B I needed a slight overclock to get 720p working smoothly. Without that it would stutter and audio/video got out of sync when the bitrate exceeded about 4.5-5Mbit/sec.

I used these overclock settings on my RPi3B:

Code:

arm_freq=1300
gpu_freq=500
over_voltage=4

sdram_freq=550
over_voltage_sdram=5
sdram_schmoo=0x02000020

The RPi3B+ should be fine with stock clocking, but to get better HEVC performance I added a bit of overclock on it as well and raised the soft throttling limit to 70° (which was the value the first RPi3B+ firmware shipped with before it was reduced to 60°).

Here are the settings I'm currently using on my RPi3B+s:

Code:

temp_soft_limit=70
gpu_freq=500
over_voltage=2

sdram_freq=580
over_voltage_sdram=5
sdram_schmoo=0x02000020

Note: these overclock settings are not guaranteed to work on all RPis, you have to test yourself if they are stable on your RPi.

Also keep in mind that you need proper cooling, if the RPi starts throttling because it's getting too hot Netflix will start to stutter as well. Use eg bcmstat.sh on LibreELEC to monitor current temperature and clock rates.

so long,

Hias