https://bugs.kde.org/show_bug.cgi?id=503582

--- Comment #14 from cwo <[email protected]> ---
> It doesn't seem to be an issue of hitting a hard maximum width, the width of 
> each submenu is different so there must be some attempt to calculate an 
> appropriate width but somehow the result is never sufficient to not truncate 
> the descriptions. Sometimes it starts off re-using the width of the 
> previously displayed submenu and then after a second or two pops out to a 
> greater width, but still not wide enough.

Obviously something makes the resizing really slow on your computer.

There is a default size, and it can grow up to 1.5 times that size.

(In search results, it's fixed to 1.25 times that size, rather than growing, as
having this dynamic caused inherent visual issues as columns appear and
disappear and resize at the same time).

6.7 will have tooltips if you need to see the elided parts. Given how
unreasonably long the Comment lines for some apps can be, always making it
large enough to show it fully would not be a good idea - some people would get
stuck with a submenu that covers the whole screen.

> This is not with software rendering, it's running on the Intel iGPU which is 
> hardly any faster than software render and much more buggy. 

I'm developing this on a 10-year old laptop with an Intel iGPU (and no dGPU),
and it's completely snappy.

I've also had no other reports of this kind of slowdown.

X11 may be related; I have tested things occasionally (on a different computer
with more powerful hardware) and didn't notice anything out of the ordinary,
but effort and testing there are very limited. So possibly a combination of
that and something with your specific setup.

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