PerfectTiming Ref /6
Perfect Timing
Certain Channelling skills have extra effects and benefits if released within a certain timing window while using the skill.
Certain support gems and items can modify the duration of that timing window.
(50–100)% increased Armour and Evasion
+(200–400) to Accuracy Rating
(30–50)% increased Critical Hit Chance
Skills have a (100–150)% longer Perfect Timing window
Supports Attacks, causing them to gain Accuracy, and never miss against Enemies on full Life.
Supports any skill that Hits enemies, causing it to Consume Freeze on Igniting a Frozen enemy to boost the effect of the Ignite.
Supports Channelling skills that have special effects if released with Perfect Timing, causing them to deal much more damage if released with Perfect Timing but reducing the Perfect Timing window.
Supports Channelling skills that have special effects if released with Perfect Timing, causing them to deal much more damage and grant Perfect Deflection if released with Perfect Timing but reducing the Perfect Timing window.
Perfection Buff
Perfection lasts for 10 seconds and can stack up to 4 times, granting 5% more Damage per stack. This Damage bonus is not limited to Skills Supported by Perfection Support.

Failing to successfully execute any Perfect Timing will remove all Perfection stacks on you.
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