Based on your description of the issue and troubleshooting steps you've taken:

1. Ensure that both Rainmeter and MSI Afterburner are up-to-date to their latest versions.

2. Check if there were any recent updates or changes made to either program's settings, plugins, or drivers around the time when this problem started occurring.

If none of these basic checks resolve your issue then I think it might be worth trying some more advanced troubleshooting techniques such as:

1) Uninstalling and reinstalling both Rainmeter and MSI Afterburner from scratch.

2) Clearing all cache files associated with each application before reinstallation (this can sometimes help clear out any corrupted temporary data).

3) Checking Event Viewer logs for any relevant error messages related to either program's operation.

If after trying these steps you still cannot get GPU monitoring working correctly through Rainmeter skins using MSI Afterburner as a data source then please provide more information about your system configuration, including:

- Operating System version

- Motherboard model and chipset type (if applicable)

- CPU architecture (x86_64 or x86)

Any additional details regarding the specific skin(s) that are not working correctly would also be greatly appreciated.

Gpu and cpu temp monitor rainmeter