how to make “reset()” more effective

Here’s the part of my code:

```
def anim():

ms = pts.mlab_source

for i in range(490):
scalars = X_minMax[:,i+1]
print(i)
ms.reset(scalars=scalars)
pts.module_manager.source.save_output('./results/output'+str(i)+'.vtk')
yield
```
When I run it in local, it runs effectively, however, when I use django running this code,

`ms.reset(scalars=scalars)`

this sentence will take a long time, and I don’t know what happens, is there a way to replace it or make it quicker?

thanks for your answer!