Orientation plays a big role in that. I try and cut my pieces such that I reduce the amount of support material needed. Aside from that, I use the same, or similar setting that I use everywhere else. 3-5 walls, 5-10% infill, with a 0.2 layer height. If you're new to 3d printing, I'd recommend trying some test prints to see how fast you can print before it starts losing quality. Also, if you have a "bed slinger" type printer, I'd also recommend watching some of CHEP's videos on youtube for printer profiles.
Also silk pla often requires a slower print speed. If you can, I'd recommend pla+ or petg.