FHR only matters ( rly ) when one gets potentially stunned multiple times in a row
but with immunity frames online thats not the case
MindBlast from Assassins are normaly 11 to 9 Frames
Whirlwind , Smite etc. are way quicker like 4 / 5 / 6 Frames
when you re not affected by a stun anylonger you have to use a movement command [FRW Radius / Yards & maybe +X / XX % Velocity / movement angle etc. ]
or a skill like teleport which is subject to FCR / Frames / Individual Character
or a skill that displaces you or your enemy FCR / Frames / Individual Character / IAS
etc.