Freezing With Sweeps

Simple sweeps seem to take a very long time if simple, and seem to freeze indefinitely for even slightly more complicated sweeps such as below. Not sure if this is something fixable or a core limitation of the kernal, but figured I'd share the issue.

## To Reproduce

```python
from cadquery import *

pipe_path = Workplane("XZ").spline([(0,0), (20,-20), (50,-20), (50,-30)])
pipe = cq.Workplane("XY").circle(5).sweep(pipe_path, multisection=0, isFrenet=1, clean=False)
```

## Environment

OS: Windows
Was CadQuery installed using Conda?: Latest CadQuery packaged with CQ-Editor

Using: CQ-Editor