Windows 7 RAM usage - Rammap shows "Transition" pages constantly growing under "Process Private"

I'm guessing you have Crowdstrike installed ? https://supportportal.crowdstrike.com/s/article/Falcon-sensor-high-memory-consumption-on-Windows-Hosts

I had the same issue, you will need to downgrade the sensors.

For clarity as the URL is behind a support portal you need to downgrade to 6.23.13702 until the issue is resolved.

See below :

Falcon sensor high memory consumption on Windows Hosts

Jun 28, 2021 Symptoms

Falcon sensor high memory consumption on Windows Hosts.

Appears to be more prevalent on Windows 7 and Server 2008 R2.

Applies To

All Windows OSes

    more prevalent on Windows 7 and Windows Server 2008 R2

Falcon Sensor for Windows versions

    6.25.13905

    6.24.13806

Resolution

Issue is currently unresolved.

Workarounds, if running on Windows 7 or Server 2008 R2:

    Customers with both CrowdStrike and Microsoft Extended Support Updates installed:

        Downgrade sensors to 6.23.13702

        Lock update policies to prevent upgrade, until issue is resolved

        If you have paid for and signed a Microsoft ESU Agreement, those updates must be installed on Windows 7 or Server 2008 R2 hosts to fall into this category.

    Customers without Microsoft Extended Support Updates installed:

        Windows 7 and Server 2008 R2 are only supported on specific versions. Downgrade, and lock to, one of these versions.

        If you have paid for and signed a Microsoft ESU Agreement, but those updates are not installed on Windows 7 or Server 2008 R2 hosts, they fall into this category.