Hi,
SSH performance should not be affected by updating VisualGDB. Please try installing the previous version and check if the problem persists. If it does, please try deploying the same executable using a different SSH client (e.g. using PuTTY SCP or SmarTTY).
If you can confirm that the problem only happens with VisualGDB, but not with other SCP software, we can help you narrow down the difference and make sure the VisualGDB performance matches the performance of other tools.