Update to version 2.7, performance deteriorates

Update to version 2.7, 3Dtiles is indeed clearer than before, but the performance is half of my previous, what is the principle of the newly added ellipsoid, can not be changed

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Is the ellipsoid stuff what you’ve tracked down your performance issues to? It shouldn’t be causing that much of a performance hit, so if it is, that’s a problem. The change here was changing the hardcoded ellipsoid (Ellipsoid::WGS84) to one the user can change, so I wouldn’t think it would be responsible for such a performance hit.

The new version has updated those Tiles and now displays more tiles than the previous version, with version 2.4 hitting 90 frame rates in the same scenario, instead of 30,
Where should I change these