[Bug 38085] New: Steam is slow/unresponsive when scrolling window contents

https://bugs.winehq.org/show_bug.cgi?id=38085

Bug ID: 38085
           Summary: Steam is slow/unresponsive when scrolling window
                    contents
           Product: Wine
           Version: 1.7.36
          Hardware: x86
               URL: http://media.steampowered.com/client/installer/SteamSe
                    tup.exe
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 50752
  --> https://bugs.winehq.org/attachment.cgi?id=50752
terminal output

When I use the mouse wheel or the scrollbar on the right to scroll through
pages in the Store/Community/Profile pages, Steam (or Wine?) becomes
unresponsive for 5-10 seconds or more. Sometimes I can't use the scrollbar at
all.
When this happens both steamwebhelper.exe and wineserver are hogging the cpu
for several seconds.
The Game Library is the only screen where the problem doesn't occur and
scrolling through the list of the available games is as smooth as it should.
There was a Steam client update in last summer or autumn which resulted the
current behaviour under Wine.
I don't have such issue with the native Linux Steam client.

I have dwrite disabled and corefonts installed.

wine-1.7.36-83-gf75d1b0
Fedora 21
XOrg 1.16.3
XFCE 4.10
Nvidia binary drivers 340.76