An issue has been identified in the 7.6.0 release - published on 31st July, 2018 - that causes slowness within the Admin Area
Resolution
We are releasing a hot-fix patch which resolves the underlying issue by improving the query logic used.
Applying the HotFix
To apply the fix, download the zip file from the link below. Extract the contents and upload to your whmcs directory overwriting the existing files.
CORE-12594-Optimise-GetTicket-query.zip
Note: This file is only applicable if you are running Version 7.6.0