There's a cast delay after using Infinity which counts as active time before you can start casting.
Yes, someone else please test this. Preferably with videos. For all I know, the values for Meteo's speed could have changed since I tested them. All I know is that Genesis was noticeably faster, and I couldn't get more than 6 casts in 15 seconds (sixth would be beginning or mid-animation on the 15th second) whereas 6 were almost completely finished for Genesis. For the record, I tested the full minutes using Power Elixers in the middle of animations, and I tested several times. My mana pool was approximately 16k, and I used level 1 Genesis/Meteo/Blizzard, with only level 3 Elemental Amplification for Meteo and Blizzard.
Yes, someone else please test this. Preferably with videos. For all I know, the values for Meteo's speed could have changed since I tested them. All I know is that Genesis was noticeably faster, and I couldn't get more than 6 casts in 15 seconds (sixth would be beginning or mid-animation on the 15th second) whereas 6 were almost completely finished for Genesis. For the record, I tested the full minutes using Power Elixers in the middle of animations, and I tested several times. My mana pool was approximately 16k, and I used level 1 Genesis/Meteo/Blizzard, with only level 3 Elemental Amplification for Meteo and Blizzard.