Just went to export my first VLOG on APP 2019 and the software crashes at about 70% or 80% every time!!!!!!!!!! I have an edited video sitting in Adobe, but cannot use it.
If you're crashing, feel free to send me a crash report. These provide good info. You can copy and paste the crash info from the dialog that pops up if you'd like to send it to me directly.
Your issues sounds a bit different than the DL performance issues mentioned above. May be worth filing a new thread to help focus on that issue. Otherwise, more info is needed in order to help. (OS, GPU, GPU Driver, Project details, etc).
There have been a lot of recent changes with GPU drivers and OS. If you're crashing that would be one of the first things I would check into.