Hi Emilia,

If you are getting IRM rights checking on Microsoft Powerpoint, then it is not a problem as it will not happen on all the files you will open through Powerpoint. 
Information Rights Management (IRM) allows individuals and administrators to specify access permissions to documents, workbooks, and presentations. This helps prevent sensitive information from being printed, forwarded, or copied by unauthorized people.

After permission for a file has been restricted by using IRM, the access and usage restrictions are enforced regardless of where the information is.

Authors can restrict permission for documents, workbooks, and presentations on a per-user, per-file, or per-group basis .
Authors use the Permission dialog box to give users Read and Change access, and to set expiration dates for content.

To view rights-managed content that you have permissions to by using the Office 2010, just open the document, workbook, or presentation.
If you want to view the permissions you have, either click View Permission in the Message Bar.

For Adobe Reader, you can follow the below points to make it fast:

1. Opening PDF documents using Adobe Acrobat on slow computers takes a long time because of the number of plug-ins that Acrobat loads during start-up. Many of the plug-ins, such as the Multimedia plug-in, are rarely used and can be disabled to reduce the Acrobat loading time. Once a plug-in is disabled, the related toolbar is not available until the plug-in is enabled.
2. To establish the functions of the various Acrobat plug-ins and their dependencies, click About Adobe Plug-Ins on the Help menu.
   The About Adobe Plug-Ins dialog box is displayed.
3. Select a plug-in from the list of plug-ins.
   The About Adobe Plug-Ins dialog box displays the file name of the selected plug-in, and a brief description of its function. The Dependencies pane displays a list of other plug-ins that depend on the selected plug-in for proper functioning.
4. Examine the list of plug-ins and their descriptions and note the file names of plug-ins you do not require. For example, if you do not work with forms in Acrobat note the Forms plug-in for disabling after ensuring that you also do not require the dependent plug-ins.
5. Click OK to close the About Adobe Plug-Ins dialog box.
6. Depending on the plug-ins you have disabled, the next time you open a PDF document, Adobe Acrobat will load faster, and with only the required toolbars and menu options.

I hope this helps in making both the applications faster. If you still face any issues, you can let me know and I will provide further assistance.

Regards,
Lokesh

Hello Emilia,

If you would like to make your computer runs faster, please refer from the link provided below.

http://www.reviverso...

You can also take a FREE Windows Registry scan to find errors that can cause PC problems, please click the link below.

http://dl.reviversof...

I hope this helps!

Christian