Shared this before, but sharing again in answer to your question. It’s actually the main reason I got on this forum because I was fuming with keyboard warrior level sport scientist rage about all the promotion of 2:1 all over the internet. LOL
1:1 Glucose:Fructose Ratio Works better than 2:1.
2:1 was never best. The whole world just thought so. The ratio was created by a couple prominent studies that became dogmatic. “Best” is variable, and probably lies in most cases between 2.0:1.0 and 0.9:1.0.
1:0.8 is great.