Add the Power Plan option to the Rules.

[Meyaki2k8]

Feature Request: Per-Process Power Plan Rules

Hi! First of all, thank you for making ProcessX. I really like the idea of keeping ProcessX lightweight while still providing useful per-process controls such as CPU priority, I/O priority, and CPU Sets.

While using ProcessX, I noticed that one feature that could make it even more useful is per-process Power Plan rules.

Proposed feature

Allow users to assign a Windows Power Plan to an .exe rule, similar to the existing CPU Priority / I/O Priority / CPU Sets settings.

For example:

Process	CPU Priority	CPU Sets	Power Plan
game.exe	High	P-Cores	Ultimate Performance
discord.exe	Normal	All CPUs	Follow Current

The Power Plan selector could be added to the existing rule editor.

Example:

Power Plan:
[ Follow Current ▼ ]

The dropdown could automatically detect the Power Plans currently installed on Windows using:
powercfg /list

The selected Power Plan could be stored by its GUID rather than its display name.
Important Windows limitation
I understand that Windows Power Plans are system-wide rather than truly per-process.
So I don't mean that the Power Plan itself should somehow become isolated to a single process.

Instead, the behavior could be:
Process starts
    ↓
ProcessX detects its Power Plan rule
    ↓
Activate the configured system-wide Power Plan
    ↓
Process exits
    ↓
Restore the previous Power Plan if no other managed process requires a different plan

Multiple processes
It would also be useful to handle multiple processes safely.
For example:
GameA.exe → Ultimate Performance
GameB.exe → High Performance
If GameA starts:
Ultimate Performance
If GameB starts afterward:
High Performance
If GameB exits while GameA is still running:
Ultimate Performance
And when GameA exits:
Restore the Power Plan that was active before ProcessX started managing it.

This would prevent ProcessX from restoring the wrong Power Plan while another managed process is still running.
Why I think this would be useful
ProcessX already works very well as a lightweight alternative to heavier process-management tools. Per-process Power Plan rules would make it particularly useful for gaming PCs where users may want different power profiles for different applications.
For example:
Competitive games → High Performance / custom gaming plan
CPU-heavy workloads → Ultimate Performance
Normal applications → Follow Current
Battery-sensitive applications → Power Saver
It could also work nicely alongside the existing CPU Priority and CPU Sets rules.
I actually prototyped this feature
I created a small fork/prototype to see how this could work in practice.
The prototype adds:
Dynamic Power Plan detection
Power Plan selection in the existing rule editor
Power Plan GUID storage
Automatic powercfg /setactive handling
Restoration of the previous Power Plan
Basic handling for multiple processes
A "Follow Current" option
I'm not necessarily suggesting that my implementation should be merged as-is. I mainly wanted to demonstrate the feature and show that it seems to fit naturally into ProcessX.
If you're interested in the feature, I'd be happy to provide the prototype/fork or a PR for review.
Thanks again for ProcessX!
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https://github.com/Meyaki2k8/ProcessX