Game crashes periodicaly

Hello,

the game crashes after playing some time. First it starts to hang for a second or less. If I continue

playing it will hang the entire computer and I have to use the reset button. From all the crashes I managed to get one log file with some error in it.

2019-01-13 17:06:32.275 - Thread: 62 -> Exception occured: System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.

at hkpBvCompressedMeshShape.{ctor}(hkpBvCompressedMeshShape* , hkpBvCompressedMeshShapeCinfo* )

at Havok.HkBvCompressedMeshShape.initShape(Vector3* vertices, Int32 verticesCount, Int32* indices, Int32 indicesCount, Byte* materials, Int32 materialsCount, HkWeldingType weldingType, Single convexRadius)

at Sandbox.Engine.Voxels.MyVoxelPhysicsBody.CreateShape(VrVoxelMesh mesh, Int32 lod)

at Sandbox.Engine.Voxels.MyVoxelPhysicsBody.<>c__DisplayClass3.<RequestShapeBatchBlockingInternal>b__2(Int32 i)

at ParallelTasks.ForLoopWork.DoWork(WorkData workData)

at ParallelTasks.WorkItem.DoWork(Int32 expectedID)

at ParallelTasks.Task.WaitOrExecute(Boolean blocking)

at ParallelTasks.Parallel.For(Int32 startInclusive, Int32 endExclusive, Action`1 body, Int32 stride, WorkPriority priority, Nullable`1 options, Boolean blocking)

at Sandbox.Engine.Voxels.MyVoxelPhysicsBody.RequestShapeBatchBlockingInternal(HkShapeBatch info, Boolean lod1physics)

at Sandbox.Engine.Voxels.MyVoxelPhysicsBody.RequestShapeBlocking(HkShapeBatch batch)

at Havok.BatchShapeProvider.ExecuteBatchBlocking(BatchShapeProvider* , Int32 batchId)

I attach the entire log file too.