Ok so ill share a lil secret with u
U must NEVER EVER include ice in ur combo. especially for those that like to "hot flash" a lot in pve, DoNT. Cuz its simply not worth it. ICE and FROST should only be used as a backup in case ur main combo fails. Many ppl dont know bout this and they think that sacrificing 1 sec for that lil bit of "hot flash" action is good, well, its not. And also another case is that lightning MUST be the opening for a battle. For nuke mages, especially, cuz it has a slight armor debuff. So the skills spammed after lightning should have more dam, making up for the lost of "hot flash" . And alos, Be quick with ur fingers

Good Luck PVPing!