Avisynth stops serving frames

[Floatingshed]

I am using v2.6mt. Occasionally the process just halts at a seemingly random frame. Reducing SetMemoryMax to 512 will usually fix the stalling but also slow things down.
Is there some kind of diagnostic tool or technique to reveal which filter is causing the problem?

[poisondeathray]

You can try taking filters out 1 by 1 then using use avsr or avsmeter to run scripts to look at info such as fps, memory usage, threads

Did you consider using avs+ mt x64 ?