I didn't even know this was an issue.
Every time I read one of these threads about some issue with the timing of fractions and final times it pushes me further in the right direction of thinking looking at the quality of the horses in the field, watching the races, and looking at the charts is the better approach. Unfortunately, there are other issues that come up in that form of handicapping from time to time that make the times of race indispensable, if not always trustworthy. Tough game to be confident.