--- Comment #117 from Ovidiu Chi <> ---
> I am running a slideshow of 2560x1600 images every 2 seconds with 

@Matt, You'd have to start the slideshow then, after a little while(a few
seconds), change the duration (e.g. from 3s to 2s).

I did some more tests.
I set `export QSG_RENDER_LOOP=threaded` in
`~/.config/plasma-workspace/env/` and logged back in.
I cannot reproduce the problem anymore. The memory either doesn't increase or
rises very little and gets freed afterwards. Everything looks stable.

I then set `export QSG_RENDER_LOOP=basic` in the same file and I could
reproduce again.
So it seems Kubuntu 18.04 is set to `basic` by default. I entered `QSG_INFO=1
plasmashell` in the terminal to find out the value, but nothing is displayed.

I don't know if the behavior is the same on all graphic cards.
If someone is able to test this out, great, otherwise it will be another tweak
I need to write down.

System details:
CPU: Intel i7-6700HQ (8) @ 3.500GHz 
GPU: Intel HD Graphics 530 

OpenGL renderer string: Mesa DRI Intel(R) HD Graphics 530 (Skylake GT2) 
I have not installed the Nvidia drivers.

I've set GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nouveau.modeset=0" in
`/etc/default/grub` so I can log in, shut down and suspend the laptop properly.

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