I’m at 6800 feet. For a while I had significantly upped my boil times especially for beers with European Pilsner malt. I’ve since backed down to more normalish times. 90 for any of the Weyermann pils malts seems to be fine. Zero DMS issues. Standard US 2row and/or English malts 60-70 seems totally fine.
As much as the hop utilization sucks from an expense standpoint I think it’s rather nice from a hop flavor standpoint. You can add a lot more hops on the hotside without getting as much bitterness. Makes for a more interesting beer IMHO.