dude do i need a 15ias jewel for ww with a 40ias greifz? pretty sure i need 63 ias?

check this out.. based on barb + zerker + WW it caps at 34 ias..

https://d2.lc/IAS/?char=2&charform=0&waffe=25&barbschwert=-1&infoWaffe1=one-handed+swinging+weapon+%5B0%5D&wIAS1=0&primaerwaffe=on&zweitwaffe=0&infoWaffe2=&wIAS2=0&IAS=0&skill=19&fana=0&frenzy=0&wolf=0&tempo=0&holyfrost=0&AnzFPA=8+frames+per+attack&AnzMax=&AnzFre=3.12+attacks+per+second