After years of thinking that everyone felt terrible/experienced S/Sx of moderate AMS when traveling at altitude, I have finally realized that I think my body does a poor job of acclimating. I have experienced near debilitating AMS several times near/above 6000 meters, but even experience what I consider worse than average AMS at/above 4000 meters in the lower 48. I understand the basic tips/advice for acclimating (slow ascent to new altitudes, avoid respiratory depressents, high carb diet, etc) and also know that ability to acclimate can often be genetically linked, but I was wondering if anyone has had any success in finding ways of improving how their body responds to high altitude?
For additional context I was just in Peru where at the end of our trip, after having spent 10 nights at 3000 meters, 18 nights between 4-4500 meters, 3 nights at 5000 meters, and having climbed higher than 5500 meters 3 times, we climbed/skied Nevado Copa (6188m). Even with all this time acclimating I developed moderate AMS with loss of appetite, nausea, headache, foggy mind, and general fatigue. I live in SLC and climb/ski at up at 11000 ft regularly without issue. I had strong aerobic fitness going into our Peru trip, routinely doing days with twice the elevation gain we did on Copa. I would love to find a way to improve how my body acclimates, as it is frustrating to feel so sick every time I climb to a new altitude above 4000m.