1 handed weapon
first break point - -10 6 frames per attack
second break point -35 5 frames per atatck
all above -10 - 8 frames
all below -35 - 5 frames

2 handed weapon
Total weap speed 20 or bigger: hit every 9 frames
Total weap speed 19 to -9: hit every 8 frames
Total weap speed -10 to -29: hit every 7 frames
Total weap speed -30 to -59: hit every 6 frames
Total weap speed -60 or smaller: hit every 5 frames