Reply To: Performance in Production v Sandbox

The article you mention is the first things to check, so far you have done what is needed. That is if you turned off Automatic cost posting and cost adjustment.

If you still have performance issues after that, it is hard to advice without knowing what type of environment you are on.

Best option would be to send in a support ticket to Support@dmsiworks.com and we will assist you in troubleshooting your performance.