Trap laying:
35 ias 10 fpa
63 ias 9 fpa
Trap laying (10% slow):
54 ias 10 fpa
89 ias 9 fpa
WW:
5 ias 5 fpa
39 ias 4 fpa
WW (10% slow):
16 ias 5 fpa
58 ias 4 fpa
_______
You can decide if you wanna chase 9 fpa trap laying speed while being slowed by Arach, imo it's fine dropping down to 10 fpa there but you wanna make sure to maintain 4 fpa WW speed.