Driving habits??? I drive 75 on the interstate. A 90k truck should not have these type issues. Not sure if you reading other post, but I'm not the only on having these ongoing issues...I don’t know why you would only be getting 190 miles on a full charge but it must be something to do with your vehicle or your driving habits or a combination of both. I routinely get at least 330 miles on a full charge, but I am a rather efficient driver unless I’m being playful or heavy footed.
You need to also understand that unlike ICE vehicles, EV vehicles are less efficient the higher speeds they go. They also did not get their full range as temperatures drop below 40 and again bel20. That’s going to be true of any electronic vehicle not just the lighting.
That doesn’t mean that you have to do 60 miles an hour but you have to understand that’s not where the vehicle is going to be at its most efficient. Additionally, I’ve not found that running the heat has made any difference on the mileage. Nor did using the AC.
I think your problem sounds like an outlier. I would evaluate your driving habits and look there as first line of troubleshooting.