Hello, so i have moved from an old debian X11/KDE Plasma system to fedora 42 Wayland/KDE Plasma

So now running

kernel: 6.14.9-300.fc42.x86_64
KDE Plasma Version: 6.3.5
QT Version: 6.9.0

Tixati v3.35 installed from .RPM

So the thing is, say for example tixati is downloading a torrent at a steady 2MB/s
This is only possible when tixati window is minimized. Immediately when i view the interface, download speed drops to about 600-800KB/s.

This happens every time, without fail. It shows when monitoring download speed with btop in terminal. It shows looking at tixati bandwidth chart.
I have tested tens, soon hundreds of times.

It even happens when tixati is minimized, but i move the cursor over the taskbar icon, and it shows a thumbnail of the tixati GUI. Immediately the download speed drops around 75%. Immediately. And moving cursor away, closing the thumbnail preview, immediately the speed goes back to normal.

minimizing tixati GUI, immediately the speed goes back to normal.

I still haven't tested installing an older tixati version, or trying to isolate the issue other ways.. This is a desktop that i'm streaming over sunshine/moonlight, but over a completely different network interface and switch.

But testing if sunshine has something to do with it takes some effort, so i decided to type this and see, if anyone on wayland can reproduce this issue? It's driving me crazy, because i must always keep tixati minimized to download anything

I also have incredibly slow peer connect speeds, it takes a long time to connect to any peers, it just sits there saying waiting to connect.. but selecting all peers and choosing connect from menu, and it immediately starts downloading,  which someone else also complained about, and now i'm starting to think there is some bug that causes tixati to get very slow in many ways under wayland, something GUI related?

Thanks to anyone testing..

I can confirm this bug for a different setup. Exactly the same behaviour on Debian Bookworm with XFCE on low-end X64.

try running the CPU usage diagnostic graph. (yellow question mark at the top-right)
when your speed goes down, what happens in the graph?

The GPU (bright green) on the top chart is elevated, around 120-140 ms/sec when the GUI is maximized, the CPU usage chart also affects the results, so i need to minimize both screens, and the GPU line drops to around 60 ms/sec

Filesys wait (white) is the other line that is elevated, but isn't affected bt interface.. so probably normal

the lower chart C/sec, is not affected

actually GPU line now went to 200-220 when GUI is maximized.. currently don't have any high speed downloads, will test more when i get the chance

sorry, GPU = GUI (bright green)

just confirmed with a transfer in progress, GUI goes from very low, below 25 to 225-250 when window shows (not minimized)
and netbase (yellow) plunges.

everything else seems normal

According to htop CPU usage goes down, when window is shown and transfers slow down. Goes up when minimized with fast transfers.

try running the GUI detail within the CPU, just so the dev can tell what number is going up/down.
what tab is up when you have tixati up?
does your speed drop no matter what tab is up?

In the GUI detail it seems it's the light blue number 4 that is reacting.

EDIT: seems the transfer tab causes the most serious elevation in GUI (bright green). Other tabs like home or feeds affect it less, about 140-160, but still very elevated compared to everything minimized (about 25)

Above without active transfers, based on my observations, with active transfers, download speed just plunges to about 800KB/s whenever tixati GUI is shown. goes back to normal immediately when tixati is minimized. And again, even with tixati minimized, just moving cursor in KDE plasma over tixati taskbar icon, popping up the preview thumbnail, immediately plunges download speeds as well.

Complicating my reporting is showing the diagnostics window also affects this the same way, so i have to minimze all windows, wait, and then see what happened.

The other guest confirmed the exact same behaviour on a total different setup, X11/xfce (i assume X11, don't know)

So this must be reproducable by many others. Overall, latest version just seems very very slow on transfers, not only the immediate plunge in download speeds, but also just sitting there waiting to connect to peers for ages.. something is going on, and it's serious.

Hope others with more indepth knowledge and experience in debugging can confirm and chime in

In another update, well seems the issue is suddenly gone. I don't know what happened, but the window size of tixate was 'reset' or how app window sizes would change when you change screen resolution.. This might be related to sunshine/moonlight streaming..

But, it seems the problem has just disappeared. now i can have 2M+ downloads while looking at tixate GUI. I have no clue anymore..

There was no OS reboot inbetween