Same part printed with %15 gyroid is 270.8 g takes 7h 21m vs printed with %15 rectilinear is 276.9 g takes 5h 52 m. Why might this be?
straight lines go at a higher speed than curves, it’s normal and expected behaviour
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So the reason for choosing gyroid over rectilinear would be for it to be sturdier right? I think gyroid is also more prone to z banding also but I’m not sure yet.
Yep gyroid is great for strength and also to avoid the nozzle rubbing over the layer below which happens in grid sometimes.
I personally switch between gyroid and adaptive cubic most times, gyroid for strength and cubic I think is a good compromises between strength and speed
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My favourite infill for quite some time is crosshatch. For most layers it is just straight lines, it does not intersect which would cause problems with e.g. PETG and still alternates every dozen layers or so for best stability. It uses a few layers for transition from one orientation to the other that look similar to gyroid.
A bit off-topic, but related to the keyword crosshatch:
If you want to print TPU parts that are intended to have uniform and continuous elasticity throughout, the crosshatch pattern is an excellent choice.