After some research on wtf might be going on, I had my suspicions and took an omegaquant test which revealed my circulating phospholipid omega-6 levels were crazy high, just a few percent below their max reference range. Moving to beef only halted my issues after 1-2 months.
I like beef and monotony, but even I can’t eat just beef. I now cycle between keto and carbs (mostly potatoes, carrots, onions and glass noodles, sometimes pasta or bread buns). I generally have carbs near workout days. Now that I’ve shed the omega-6 pounds, I have some tolerance again but end up still mostly use beef, eggs, and frozen seafood blends (no fish, which when farmed tends to be high in omega-6).
Oh, and if you are looking for a salad dressing that isn’t just flavored vegetable oil (high omega-6), give the “skinny girl” brand a try.