Personally, I think latency issues are often imagined. Someone thinking they are feeling a difference of milliseconds from one radio to another is often based on impressions of what they think is the better radio. Saw this video where they compare a flysky to a Taranis, (both are flying style radios) most assume that the flysky has more latency issues, because its like 1/4th the price of the Taranis, the results they get in the testing are interesting.
But, I also accept the idea that maybe Im just not a good enough operator to notice these milliseconds that others are capable of noticing. lol
Always keep options open.