Disable contour plot when given lots of trials

[c-bata]

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Reference Issues/PRs

None

What does this implement/fix? Explain your changes.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 69.51%. Comparing base (978695b) to head (bdb6764). Report is 3 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #850 +/- ## ======================================= Coverage 69.51% 69.51% ======================================= Files 35 35 Lines 2375 2375 ======================================= Hits 1651 1651 Misses 724 724 ```

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