Access 2010 - moving between text boxes takes time

Perhaps it is doing spelling and grammar checks?

Some information about using different languages in Access:
Type or edit text in a different language - Access - Microsoft Office

More info:
Check spelling and grammar in a different language - Access - Microsoft Office

It would seem that is not the problem:
Check spelling and grammar - SharePoint Workspace - Microsoft Office

Check spelling and grammar automatically

This section explains how automatic spelling and grammar checking works and how to turn it on or off.
Notes

• There is no option to check spelling while you type in Access, Excel, or Project.
• Grammar checking is available only in Outlook and Word.

So it is back to search and research.

Unfortunately, I have not been able to find any alternative answer.

However, I wondered how you navigate the fields. Here is a comprehensive list of keyboard shortcuts for Access:
Keyboard shortcuts for Access - Access - Microsoft Office

Here is some advice for you to consider, on methods of switching between languages:
Switch between different languages as you type - Access - Microsoft Office
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Switch between different languages by using the Language bar

Use the Language bar to switch between languages that use different keyboard layouts. When you switch a language by using the Language bar, the keyboard layout changes to the native keyboard for that language.
Use the Language bar if any one of the following conditions is true:

• You want to switch between a Latin-based language (English, French) and a non-Latin-based language (Arabic, Chinese).
• You only want to switch between non-Latin-based languages (Greek, Russian).
• You prefer to use native keyboard layouts when typing in different Latin-based languages.

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Switch between languages using the Language bar

You must enable the keyboard layout for two or more languages in the Windows operating system before you can see and use the Language bar. If you have not enabled the keyboard layouts for the languages that you want to use, enable them now following the steps in Enable keyboard layouts for different languages. In most cases, when you enable a keyboard layout the Language bar automatically appears in the taskbar or appears on the desktop. If the Language bar does not automatically appear after you enable a keyboard, see Where is the Language bar in this article.

1. Open your document and place the cursor in the document where you want to start to type text in a different language.
2. Click the language icon on the Language bar, and then click the language that you want to use.

Keyboard shortcut To switch between keyboard layouts, press ALT+SHIFT.
Note The icon is an example, and it shows when English is the language of the active keyboard layout. The actual icon shown on your computer depends on the language of the active keyboard layout.
If you have set up more than one keyboard layout for a single language, you can switch between layouts by clicking the language icon on the Language bar, and then clicking the keyboard layout that you want to use. The name on the indicator changes to reflect the active keyboard layout.

1. Repeat steps 2 and 3 to switch between different languages.

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