Crash when adding more 30 timeline to render directly from premiere pro

Thank you for the quick answer, unluckly I cannot share the media because of the size of the project, but I can explain more accurately in order to simulate the same situation.  I have a very huge PPro project that contains many 1080p mpg coming from two different camera. The main work was to synchronize the 2 cameras and create many named sub sequences from the main timeline (2 streams timeline with simple color correction)  to send to ME.  The goal is to obtain something like 400 rendered segments. The PR itself is very fast and I dont't experience any problem to manage this kind of data, so I drag the subsequences to ME in order to render. It works fine for the first 10 clips then the system progressively slow the process and go crash. No difference if the render is hardware or software selected. I assume the number of PR sequences to render is the real problem (maybe a simple ME file conversion file  cueue could exceed 30+ files). The ony solution I found is to render 30 file at a time, but is very frustrating. Thank you for your help.