Back in April we first released an alpha of a brand-new runtime for Construct. This has been completely rewritten from the ground up and brings huge performance...
Just double checked and yeah I'm running 'Version 12.0 (14606.1.36.1.9)' I appreciate the construct 3 runtime is still In beta.
Please file a bug following all the guidelines then.
Ok done. Looking forward to using the new runtime though :)