Need help with the DPS of my Icelance Build

[Stumpn]

Hi Mages,
I need some help with my build/dps. I'm in lack of a lot of dps for my ilvl. And I can't find what I'm doing wrong.
In our last raid I was at least 500 dps behind what I'd should done. In my last m+ I had the direct comparison with another icelance-mage and he was 28% percent in front with his icelance but 14% behind with his flurry. Maybe it's because of procc luck, but I've a feeling, that I'm doing something wrong in my priorities/rota. In Comparison with quicksim at the raiddummy, I'm behind 1-2k dps and doesn't reach more than 2,2k - 2,4k dps.
I checked several guides at wowhead, icy-veins, youtube and so on, but didn't find that one big issue, that I'm doing wrong.

Char:
https://www.wowprogress.com/character/e ... dor/Stumpn

Sim (one of many scenarios, which I've tested):
https://www.raidbots.com/simbot/report/ ... J5nNRjcFgS
Raidlog:
https://www.warcraftlogs.com/reports/9d ... fficulty=0

One thing i did found out was, that my mastery is ridiculous high and I've way to low crit/haste. But I think, that theres more what I'm doing wrong.

Thank for helping me out.
Stumpn

[nathyiel]

For your talent, take Chain Reaction instead of Frozen Touch (proc increase aren't worth it).

You should look at the sticky Frost guide.

[Blazer1872]

Checkout muralator helps a lot on fixing rotations

[Ptitraisin]

what is a muralator ? add-on ?