[Bug 98034] virt viewer QXL connection mouse unusable with >3ms latency with windows 8

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98034

--- Comment #6 from Yuri Benditovich <ybendito at redhat.com> ---
I've tried to reproduce the behavior descbed in
https://bugs.freedesktop.org/show_bug.cgi?id=98034#c4

Remote client: Windows 10, VirtViewer 5.0-256
Host: Fedora 25 as is, qemu-kvm + regular spice command-line + '-usbdevice
tablet'
Guest: Windows 10, qxl-wddm-dod driver 0.17 (latest at the moment), 1 CPU
(intentionally), 4G memory, +spice agent (vdservice)
Spice connection - without TLS

5 runs with LAN and Wi-Fi on Client side and with/without 'tc ... delay', below
are numbers of delay, ping time, host channel net test results (printout from
qemu when the client connected "main_channel_client_handle_pong" with latency
and bandwidth evaluation) 
1. LAN, delay 0, ping < 1ms, latency 11 ms, BW 200 Mbps
2. LAN, delay 5, ping 5 ms, latency 17 ms, BW 100 Mbps
3. Wi-Fi, delay 0, ping 4 ms, latency 15 ms, BW 27 Mbps
4. Wi-Fi, delay 10, ping 14 ms, latency 27 ms, BW 6Mbps
5. Wi-Fi, delay 30, ping 34, latency 47 ms, BW 5Mbps

In all cases I do not see any problem with mouse responsiveness and screen
updates (although for best screen responsiveness I use 'optimize for
performance' setting and not 'optimized for best appearance').

What is different between our setups? Can you provide your numbers?

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