video going into slowmotion

*I'm submitting a ...*
- [*] bug report
- [ ] feature request
- [ ] support request

## General infomration
os is LibreELEC (official): 9.0.2 (Odroid_C2.arm), addon version is 0.14.6, I have elementum running in the background
### Prerequisites

* [*] Are you running the latest version?

### Description
in the last week or too, I'm unable to watch anything on netflix, I have a 1GB internet connection, when I try to play something, the sound runs ok but the image is slow, that slow that it goes out of sync with the audio.

### Steps to Reproduce

1. install the os above
2. install netflix from the repo
3. not sure if it is related but install elementum
4. try to play any show. I've tried umbrella academy

**Expected behavior:**
video and audio are in sync and the speed is as it should

**Actual behavior:**
audio plays as should, video plays slower, causing them to do out of sync.

## Context (Environment)
os is LibreELEC (official): 9.0.2 (Odroid_C2.arm) on odroidc2

### Installation

* [*] I installed the plugin via zip from the Releases page: url is https://github.com/castagnait/repository.castagnait/raw/master/repository.castagnait-1.0.0.zip
* [ ] I´m using the Netflix Repo
* [ ] I´m using a different source (Please tell which)

### Operating System
* [ ] Linux (x86/x64)
* [ ] OSX (x86/x64)
* [ ] Windows (x86/x64)
* [*] Linux (ARM)
* [ ] Android

#### Additional informatin on the environment
os is LibreELEC (official): 9.0.2 (Odroid_C2.arm) on odroidc2

## Debug log
attached, was to large to upload
[kodi.debug.xz.gz](https://github.com/asciidisco/plugin.video.netflix/files/3388615/kodi.debug.xz.gz)

## Other information
none

Start by inspecting the attached kodi.debug.xz.gz log and reproducing playback on LibreELEC 9.0.2 for Odroid C2 with addon 0.14.6, including the Elementum setup. Compare the reported slow video and synchronized audio with a normal playback case; the issue is done when video and audio remain in sync during Netflix playback.

Written by the indexing model from the issue text.