Process Lasso Pro 16.1.0.46

Overview

Process Lasso Pro from Bitsum is a Windows process automation and CPU optimization utility. Its ProBalance algorithm temporarily lowers the priority of background processes that monopolize the CPU, which helps the system stay responsive under heavy load. Process Lasso Pro also lets users set persistent rules for CPU affinities, priorities, and power plans, so each process runs the way the user specifies.

Compatibility and Version

Process Lasso runs on Windows 7 through Windows 11 and Windows Server 2012 through Server 2025. The current version, 18.4.0, was released on October 1, 2026. Bitsum has offered the software since 2003, and it is available in 16 languages.

Core Features

• ProBalance helps maintain system responsiveness during high CPU loads.
• Persistent priorities and CPU affinities are applied every time a process launches.
• CPU Sets act as a softer form of CPU affinities that work more like preferred cores.
• The CPU Limiter dynamically limits a process's CPU use when it reaches a threshold, and the Instance Balancer spreads CPU cores among running instances of an application.
• Group Extender lets processor group unaware applications use the full CPU.
• Efficiency Mode control sets and persists Windows 11 Efficiency Mode for selected processes.
• IdleSaver switches to a power plan suited to idle or active use, while Keep Awake prevents sleep for a set time or while selected processes run.
• Advanced Watchdog Rules take action when matched processes reach resource thresholds, and Disallowed Processes terminate matching processes immediately.
• Limit Instances caps the number of instances a process may have in a user session, and Disable Hyper-Threading or SMT works on a per-process basis.
• Audit System Activity logs process launches and other selected system activity.
• Multi-select operations act on several processes at once, and configuration profiles allow switching between rule sets.

Interface and Workflow

The main window includes a live graph, a process list with rules, and an actions log of every adjustment. The Responsiveness Metric measures how responsive Windows is and displays the result in the graph. All rules appear in one editable view, CPU affinities can use named presets per CCD, and installed games can be selected when creating rules. All algorithms and rules are enforced by a stand-alone background service called the Process Governor, and the graphical interface is optional.

Automation

Process Lasso Pro automates how applications run. Users can set CPU affinities, priorities, and power plans, and power plans can switch automatically when specific apps are running. Performance Mode switches to the Bitsum Highest Performance power plan while demanding apps run.

Practical Applications

Process Lasso Pro suits users who run CPU-intensive workloads on desktop or server systems. The CPU Limiter, Instance Balancer, and Group Extender address multi-instance workloads and older applications, while power plan automation addresses energy use. Bitsum provides a CPUEater demo to illustrate how ProBalance behaves under load.

Availability and Licensing

Process Lasso can be downloaded free of charge. The Pro edition is offered as a one-time lifetime license, currently listed at TRY 536.83 with an earlier price of TRY 894.72, and purchase options are available on the Bitsum website.