They seem to be dealing with the Pi3 and circa 2018. Still relevant?
Yes, it's a risk to select the right files. Probably too much risk.
My advice is to use a second microSD containing Raspbian.
On Raspbian use the rpi-update command to update the firmware. That's the safest way to do it.
After that, insert your LE card, and it hopefully runs better with the new firmware.
Does that require just placing the files in the proper directories?
milhouse gave this instructions. If you have a second card containing Raspbian, it can be used to update RPi firmware more comfortable.
As mentioned, make sure your card has no errors, or followings steps might end badly.
PS: Here are the instructions from HiassofT : click. Be careful.
I've had this issue with all four of my NUCs (NUC6CAYH) since version 9.0.0. It's still happening on 9.2.2. However, I'm running the default (Estuary) skin.
Did you switched to a custom skin, and then back to Estuary?
/storage/scripts is the right folder. That keeps system and user files (your scripts) separated.
I'm using the same folder for my scripts. I had several LE updates, including development builds, and it never killed my scripts.
If the microSD is fine, play around with different firmware versions. Maybe make notes, which versions you tried.
Thanks. Then there is no action needed for 5GHz, because US is the pre-defined country.
Because you get the error on Raspbian, too, it can only be a microSD card or a firmware issue.
To check the microSD for errors, you'll find tools on the net. I prefer GParted, but there are easier tools available.
Usually LE installs a fitting firmware version, but maybe there is a WiFi bug on it - I don't know.
However, you can install a different RPi firmware on LE: click.
5GHz has different restrictions depending on countries. In which country do you live?
PS: Check your microSD card for errors:
[63628.602614] FAT-fs (sda1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
Nobody will read 10 file links to help you. It's unreadable that way.
If somebody asks for files, you can post again.
PS: Thanks for editing your initial post.
Please edit your post and reduce the amount of linked files to two or three.
We'll ask for more logs, if needed.
PS: No reaction from your side, so I had to remove your links.
Congrats, it will help other users! 
I ran the following script I found in some other threads to try and resolve the issue: echo "options cfg80211 ieee80211_regdom=US" > /storage/.config/modprobe.d/cfg80211.conf
If you don't live in the USA, you have to replace "US" by your country code.
If you find xorg.conf somewhere, check resolution settings of that file, too.
I'm an RPi user, so I can't give precise answers about Intel settings.
PS: Try this before customizing EDID.
How do I open and edit that config.txt file?
Sorry, I was reading wrong. The config.txt does only exist on RPi's.
Try a custom EDID file,
We already had this discussion for RPi 3. Don't expect big benefit when switch to 64 bit mode.
Solving WiFi problems is like digging in the dark - terrible 
. The upcoming LE 9.2.3 will have more options to fix such issues. If you don't live in the USA, then this is worth to try.
Background theory: Your WiFi surrounding has been changed, and your router now switches to 5GHz frequency band more often. That frequency band depends on local regulations, which you can edit on RPi side as described.
I'd like to know how can I set the resolution to 1366×768.
You can use config.txt to define a custom resolution. Read here, chapter "Custom mode".
I stream all my files from my nas btw.
Do you have the same issue when playing the file from USB stick?
