Once the count of RT's exceed 500, the loading time of the RT's is too long (almost 1 to 1.5 minutes). Probably the loading time can be reduced by restricting the number of rows that are being loaded on the first go. Moreover, the older RT's are not of much use for day-to-day use.
The content in this article has not been evaluated for all Anaplan implementations and may not be recommended for your specific situation.
Please consult your internal administrators prior to applying any of the ideas or steps in this article.