Hi everyone ! I've experienced for almost as long as I can remember (?) on my machine (KDE Neon + Nvidia + Firefox) major performance issues. I'm using KDE Neon + NVIDIA GTX 1060 + latest prop drivers from PPA + tearing workaround (GL_YIELD)?

I'm asking if some of you gals/guys experience it too to check whether it's a general or configuration or KDE related issue ? (Breeze GTK ? Kwin ? Some anti-tearing workaround side-effect ? NVIDIA ? Or libs in 16.04 and used by KDE ?). My problem occurs equally with accelerated layers enabled or disabled.

First, if I just use Firefox normally, everything seems fine. But :

- quite quickly, when I watch quite a few YouTube videos in a row, FF gets progressively less & less responsive. i.e. : after one or two hours, it can take one or several seconds to switch between tabs ! (until I restart FF)

- this is more specific but I sometimes watch the live HD stream of French TV channels (like France 2). After about 30 minutes, even though my connection is perfect (fiber), the video stops due to buffer underruns. Reloading the page is not enough. I have to quit and restart firefox.

--> of course, all those sound like Firefox issues. But as I'm using the major open source browser + KDE Neon (so the LTS version of the major Linux distribution) and as those bug look quite major, I wonder if those might be :

- KDE related (Kwin / Breeze GTK ?)
- NVIDIA related (as we all know the NVIDIA proprietary drivers don't play well with KWin and not that well with Mutter anyway !).

Those bugs kinda look like some memory leaks... So maybe GPU related...

Does anyone here experience it ?
I would have to try with a different GPU or different distro...

Cheers !

Some ideas you can try to help identify where the problem is:
* (Install and) test using another (gtk-based) environment (like xfce or lxde)
* (Install and) test using another major browser (like chrome/chromium)
* (Install and) test using another graphics driver (e.g. nouveau)

Hi ! Yes I definitely have to spent some time investigating. It seems no one here encountered it though.

I also had an extension which is video related and could leak for instance (downloadhelper). One never knows !

Thanks & I'll get back to you