Quote (Kayeto @ Dec 11 2019 04:28pm)
act 2 merc (same bps as sorc)
FHR Frames
0% 15
5% 14
9% 13
14% 12
20% 11
so 20% FHR goes from 15 frames to 11 frames recovery. 4 frames faster.
1 frame = ~0.04 seconds. so he should be recovering about 0.16 seconds faster using the shael rune (IF he gets thrown into the FHR animation, which is another formula altogether). I have never tested this personally.
I would go with the 15% ias jewel
only if it will help him hit the next IAS breakpoint. this depends on the weapon he is using / other ias% on gear. check the d2 Kalkulator