A normal best practice for running Dynamics 365 for Finance and Operations is to keep the SQL Server "max degree of parallelism" ...

A normal best practice for running Dynamics 365 for Finance and Operations is to keep the SQL Server "max degree of parallelism" setting at 1, the default. However, you should consider increasing the "max degree of parallelism setting" on the database server during upgrade. This flag should improve the performance of delta preprocessing.