[Bug 58565] New: Very high single core CPU usage while doing LAN gaming with DirectPlay on FIFA 2005

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=58565

Bug ID: 58565
           Summary: Very high single core CPU usage while doing LAN gaming
                    with DirectPlay on FIFA 2005
           Product: Wine
           Version: 10.12
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: dplay
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

. So , I have both pcs with cachyOS, exactly the same settings. I've tried to
do multiplayer on FIFA 2005, that runs great with dxvk with very low cpu/gpu
usage since it's a very old game (even at hacked 1080p). After failing on doing
lan game I remembered these games tend to use directplay, so I did install it
on both , disable the firewall, and both pcs experienced a severe spike on one
core to 100% and the framerate tanks.

how to reproduce:

After install DirectPlay with winetricks on wine-10.12.r0.gb09545bc ( TkG
Staging NTsync, yes, I have kernel 6.15 ) in wow64 mode with a 64 bit prefix
running FIFA 2005.

problem: 1 core goes mad at 100% on both pcs and makes the game unplayable.
also uses tons of energy for obvious reasons.