One of the most known problem, especially in systems with many users, is managing DB locking for records, that require many updates. In term of Business Central (and previously NAV too) this problem is mostly known from No. Series.
The new version of the Business Central come with new setting in No. Series called “Non-Blocking No. Series” that could heavily improve the performance of core processes.
To set No. Series as a non-blocking, user has to select “Allow Gaps in Nos.” in the No. Series. This could be used without any problem for series that does not require to be sequential (I definitely to recommend this requirements with users who are responsible for auditing and legal requirements whether the series could have spaces in numbering or not). For example, in the Czech Republic it’s possible to use this setting for Customers, Vendors, and other entity related records, even for Orders, Quotes and any other documents that are not posted into G/L under this number.
All released or planned features from Microsoft Dynamics 365 Business Central 2019 Wave 2 could be found on Microsoft Docs.