Blueprint Editor is extremely slow on my Ubuntu 16.04. Can I improve performance without upgrading?
2 Answers
The poor performance in the widget editor appears to be a bug. However, keep in mind that your system does not meet the recommended specs suggested by Epic for developing using the engine;
Desktop PC or Mac
Windows 7 64-bit or Mac OS X 10.9.2 or later
Quad-core Intel or AMD processor, 2.5 GHz or faster
NVIDIA GeForce 470 GTX or AMD Radeon 6870 HD series card or higher
8 GB RAM
Your best course of action is to file a detailed bug report with Epic to fix this specific issue, and consider upgrading for the long term.
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\$\begingroup\$ +1, in particular a GeForce 630M, despite the higher model number, is a significantly weaker GPU than the recommended: notebookcheck.net/NVIDIA-GeForce-GT-630M.63761.0.html \$\endgroup\$ Commented Jan 28, 2017 at 11:27
This is a bug due to FNullSourceCodeAccessor::CanAccessSourceCode() being called too often.
There is a fix that has been applied to 4.17, and you can manually add it to your code by applying the changes found here.
https://github.com/EpicGames/UnrealEngine/commit/dbd864dc2de889a87a5b5a1d4d0c7cb58249c372