I'd try out eating other red meats such as lamb, bison, venison, ect. It may be an issue with red meats in general, or it may be limited to beef. But give it a try first, before you come to conclusions.
If it's an issue with red meats, then just stick to pork, fowl, eggs, ect. for your main protein sources.
If it's just beef specifically, then continue the red meat (grass-fed as much as possible) and keep the cow off the menu.
Does dairy from cows also cause issues?