I do not know my case is similar to yours.
When I produce Video HD or FullHD / MP4 using SVRT the image and the sound continues until the end.
Below left corner I turn on "Enable preview During prodution"
It makes PD render all video.
This is a palliative, solves for me so far.
This message was edited 1 time. Last update was at Apr 01. 2015 18:05
AMD-FX 8350 / 8GB DDR3
SSD SUV400S37240G / 2-HD WD 1TB
AMD Radeon R9 270 / AOC M2470SWD
Windows 7-64 / PD16 Ultimate