[Bug 38879] wbemprox fill_videocontroller calls are expensive

https://bugs.winehq.org/show_bug.cgi?id=38879

--- Comment #4 from Riccardo  ---
(In reply to Henri Verbeet from comment #3)
> Note that in principle you can use IDXGIFactory1::IsCurrent() to check when
> you need to invalidate the cache. (Currently that always returns TRUE on
> Wine, but it would be the correct way to do this.)

Well, yes, but this would still mean we keep a dxgi instance around (with its
wined3d etc.), right?

So we could still keep the current code and skip only instancing as I think the
expensive part is that one (I didn't measure it but..).

I really don't think there's a _good_ way of solving this, maybe apps shouldn't
just use wbemprox services for continuous querying.. (in this case the
informations requested are really weird: ram, driver version and desc...???).

Also I'm not sure if other apps follow the same pattern.

Last note: I may have phrased the issue wrong, it's not really a frame drop,
it's more of a ~100ms freeze (as you can see from logs).

Riccardo