Latency heatmap diagram with Exponential Scale

We should reconsider how we display latency on insights and make it easier to see low latency trends.

> **Feedback:** Your chart scales uniformly here, which causes the crucial details in the < 200ms range to become ‘blurred’, making cache hits (usually <10ms), for example, completely invisible.
Attached you find screenshot of how Apollo is doing that non-uniform scaling to not loose details.
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