wild_74 Yes, of course using a lot of character resources will cause performance issues.
In general, it is difficult to say how much performance will be affected, as it depends not only on how many physics constraints are used in the skeleton, but also on how complex the skeleton is. We recommend that you test the performance based on your own actual needs. If the results of your tests are not very good, please tell us what you tried and what the result was. We will be able to suggest possible improvements.