[Bug 49423] Added input lag in World of Warcraft and other games

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49423

--- Comment #8 from Sveinar Søpler <cybermax at dexter.no> ---
(In reply to Bloody Iron from comment #0)
> This seems to be reproducible 100% of the time based on my experience and
> generally everyone else I've asked, or read comments on the topic.
> 
> This input lag is so bad it means World of Warcraft should not be played on
> any version higher than WINE 4.16 until this input lag bug is fixed, as it
> makes gameplay elements (complex boss fights) nearly impossible.

I cannot really say if i am having the same problem, but since i am an old git,
my ADHD reaction time is hugely diminished vs. a 20 year old :) So, this might
mean i have an easier time with this...

However, there IS a wee bit of strange latency that i do not like. I cannot put
the finger on when this happened, but it might just be around those times
(4.16?), and especially i think it has become a wee bit "weirder" after you
HAVE to use "capture mouse" option in winecfg to even be able to turn using the
mouse (several bugs on this, but it is a feature me thinks). This again, might
be related to various "rawinput" patches especially from staging.
I think you should use a wine version that have all the needed vulkan
extensions enabled to get the most performance out of DXVK, and i kinda think
that 4.16 is too old, but will look into this.

Another thing to test to see if it is better/worse is to tweak with wow's input
latency settings:
/dump GetCVar("SpellQueueWindow")
Default is 400 and is mostly way too high unless you have really bad ping.
General rule of thumb seems to be ping + 100.. eg with 50ms ping:
/console SpellQueueWindow 150
or disable with:
/console SpellQueueWindow 0

As i said, i cannot really put a pointy finger at "huge issues" with this when
running with wine-5.7->5.9 or Proton, but i play a melee and mostly just
disable SpellQueueWindow completely.

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