Dexarm movement became slower

We are using the latest version of Rotrics Studio(v1.0.1) and firmware(v2.2.2) for the Dexarm. Dexarm movement became slower after continuous running for more than 2 hours. It will takes longer time to process the command, and takes longer time to proceed to the next move. The rotate command also did not execute. This problem will be solved after restart the dexarm. Hope to get some helpful advice on this problem as soon as possible. Thanks.