WineGUI has been released in version v4.5.0.

WineGUI is a user-friendly graphical manager for Wine on Linux.

The highlight is a new per-bottle CPU core limit, which also applies to GE-Proton/UMU and WineGUI-managed desktop shortcuts. On top of that, the release fixes several launch and shortcut issues and makes bottle edits faster.

✨ Per-bottle CPU core limits

WineGUI 4.5.0 adds a CPU core limit to each bottle’s performance settings. Choose how many of the host’s permitted logical CPUs a bottle may initially use. The setting applies to launches from WineGUI and to WineGUI-managed desktop shortcuts, with support for both regular Wine runners and GE-Proton/UMU. Existing bottles remain unlimited unless you enable the option.

An effective limit uses taskset and launches the application directly, avoiding a wine start intermediary that could leave games stalled. A value equal to or greater than the available CPU count behaves as unlimited, so it does not add an unnecessary wrapper. MSI installers retain their dedicated msiexec /i launch path.

🐛 Launch and shortcut fixes

• Fixed direct launches of executables with spaces in their names while preserving separately supplied arguments, including commands such as notepad file.exe.
• Managed shortcuts now follow changes to a bottle’s prefix, runner, environment, launch command, and CPU setting. Legacy WineGUI shortcuts are migrated when possible; prefix-local application paths are updated when a bottle folder is renamed.
• Normal Wine launches no longer leave shell children attached to WineGUI. Wineserver waits are bounded and their helper processes are reaped.

⚙️ Smoother bottle edits

Configuration-only changes no longer wait for background Wine services. Changes that mutate the prefix are refused while a user application is active, helping avoid interrupted running applications.

The new CPU-limit feature requires util-linux (taskset), now declared as a package dependency.

CPU affinity is not a strict sandbox: applications can change their own thread affinity after launch. The setting controls the inherited launch mask, not an immutable per-process ceiling.

Source: GitLab