Thank for your reply,
We are using the 4.23 Engine version.
In the past couple of days, we think we managed to narrow down the cause of the issue. It seems caused due to gripped objects having welded physics bodies which can be detached and reattached (eg. Gun and Magazine). Removing the magazine and destroying it happens on the Server (Magazine and gun are replicated, actors). It seems like magazine detachment is not replicated as expected on the client. Since the client tries to update the mass properties of the gun with a gripping or dropping event and the magazine is still attached yet destroyed there is a crash. We suspect that the same issue can occur due to net culling also so we made relevant physics bodies always relevant. Is something you have encountered previously and do you have any thoughts on ?