When NO poke is visible in preview but DOES poke at render time.

You have to think what is happening at render time.

Preview shows the raw object files. Versus => A render is a calculation.

Firefly adds displacement and adds Smoothing angles when told so by the render engine.

I had poking when I set Smoothing ON.

**Remember:
**
With SubD, the object file SHRINKS.
With Smoothing the object file EXPANDS.

Balance the crease angle between the clothing and the figure to get rid of this kind of poking.
Or render without Smooting enables.  => I do NOT recommend this.

I recommend to render with Smoothing enabled  and adapt the crease angle if required. My default crease angle is set at 180°, the max setting.

Also, PhilC's solution is a very good one to get rid of small poking.
Just add a slight gray in displacement at value 0.1 or 0.2 and render with Smooting and Displacement enabled.

Poser 1, 2, 3, 4, 5, 7, P8 and PPro2010, P9 and PP2012, P10 and PP2014 Game Dev
"Do not drive faster then your angel can fly"!