PSA for everyone doing their own stat weights as Beast Mastery. There exists (and has existed for a long time) a bit of a problem with SimCraft that is inherent to the tool where the behaviour of the APL can cause Haste to have incredibly high values at certain intervals, or "breakpoints" that will allow an unrealistic amount of extra spellcasts. One of these exist for BM (without Haste trinkets) somewhere between 7000-8000 Hasterating (roughly 20%, that's right, the 20% hastepoint is not a real thing). The TL;DR is that if you're simming your stat weights and Haste has an incredibly high value, firstly try and enable "Center Scale Delta" in the scaling options. If that doesn't work, turn it off and go to your profile under Simulate, scroll down to the gear section, add ",enchant=100haste" to the end of any item, and increase this Haste number in increments of 100 until the Haste weight goes down to something more normal. This will increase your DPS artifically, but it will not matter much to the stat weight result, and that's what you're after, not accurate DPS numbers.