Doc Gen is causing high CPU consumption when translating custom fields

Doc Gen is causing high CPU consumption when translating custom fields.

Steps to reproduce the error:

• Create multiple Custom Fields (> 250 custom fields)
• Export using the template store: Issues List Excel

Current behavior:

Doc Gen is taking too much time to generate the report due to translations.

Expected behavior:

Doc Gen should improve the current behavior in order to improve performance (comparing with version 4.3.7).