MRP Recalc

We are currently testing Kinetic version 2021.2.7 and have not been able to successfully run an MRP Recalc. In our 10.2.400.31 environment, it typically finished in less than 5 minutes. In the new environment, we typically end up having to cancel the job, as it begins to cause server performance issues. MRP in both the regen and net change mode seem to run in the expected time frames.

Has anyone else experienced this or do you have any suggestions of how we might best get to the root cause of this issue?