I have tried SceneView in both Java and Qt and surprised while comparing the result to see Qt C++ Globe is slower than Java for the same base map and elevation layers on same computer. Please explain why it is like this? we need to choose the API based on this performance factor.
What version of Qt are you using? We have found a major regression in Qt 5.8, in case you are using that version - [QTBUG-58608] QNetworkManager get() repetitive request stuck for many msecs - Qt Bug Tracker . The workaround is to use 5.9 (release candidate was just released) or 5.6.2/5.7.1. If you aren't using 5.8, then we may need to get some additional information to try and narrow down what is happening.
