After the newest update 2.8.2.1 it went to the New UI but then I just used the Disable Polymer fix in this thread
and it reverted and has been stable, and not slow ever since.
(I think as long as you don't delete the cookies)
Moderator: trava90


I have little doubt that that is a bonus from their perspective.
Thank you @Ziko577 . I installed the "YouTube_Classic_for_2018_(Polymer_Disable)" you attached on page 8 of this thread and for now the Polymer layout is disabled (at least until March when the "classic" youtube is discontinued).Ziko577 wrote: ↑2020-02-05, 01:20Here they are. The auto quality one is optional but you can modify it to whatever you wish I think. I have it at 480p for bandwidth reasons.

One website (no matter how popular) does not the Internet make.

Moonchild wrote: ↑2020-02-04, 13:13Fear not, it is their user-agent sniffing at work; they will be retiring their old user interface currently default in Pale Moon. Despite what the message says, it is aimed at old firefox versions that can't support their newer interface. It thinks we are Firefox due to our override.
We will adjust!
Pale Moon has no trouble supporting their newer interface (the first version of it, anyway, we're working on v2 support) but at the time this UI was introduced on YouTube, it was considered undesirable by our users so we defaulted with an override giving us the old (faster) interface.
You can change the user agent back for the time being.BKelley56 wrote: ↑2020-02-05, 22:00I still prefer the older interface. How can I get it back now that Palemoon has been updated?
Moonchild wrote: ↑2020-02-04, 13:13Fear not, it is their user-agent sniffing at work; they will be retiring their old user interface currently default in Pale Moon. Despite what the message says, it is aimed at old firefox versions that can't support their newer interface. It thinks we are Firefox due to our override.
We will adjust!
Pale Moon has no trouble supporting their newer interface (the first version of it, anyway, we're working on v2 support) but at the time this UI was introduced on YouTube, it was considered undesirable by our users so we defaulted with an override giving us the old (faster) interface.

user88818 wrote: ↑2020-02-05, 23:15if you want to go back to classic just change the user agent.
Open about:config
Then…Look for this general.useragent.override.youtube.com
And change it back to Mozilla/5.0 (Windows NT 6.1; WOW64; rv:42.0) Gecko/20100101 Firefox/42.0 PaleMoon/28.8.2
and that will give you the classic![]()
Apparently it's going to be officially gone in March but we will see. My mainframe is classic and two other computers here I just went with new look.
This is funI'm going to miss these little tragedies


Since you like the Dark Theme in the new YouTube interface, I figured you would eventually compromise to keep the Dark Theme by allowing some cookies. If you didn't compromise, you would always be re-doing your settings for YouTube.user88818 wrote: ↑2020-02-05, 21:50Nightwing I managed to change the way my cookies were set up on two separate programs and all the settings are holding for YouTube so I don't have to keep changing it black every time. I change the fonts the zoom states everything seems okay on my other computers that are now using the new interface.


It is not slow for my almost 10 years old desktop tower computer. But there could be mitigating circumstances on your end that might make it slow. Some of them could be:

Slower speed is not related to watching videos, but browsing/loading various parts of the YT website. Anyway, a reasonably modern and powerful CPU/GPU combination should have no problems with it.Night Wing wrote: ↑2020-02-06, 13:27There is one YouTube video that I like... and I have no problems with it.