Yes, that green lighting bolt inside a white circle on your meter that promises to slow down your meter. Fine. But by how much? Cut a deal with WGT (lol) since they didn't have an exact answer at that moment in time, except "much slower."
No problem. Agreed to try it and they refunded my 30 credits. Once was not going to be a trend, not with one data point, so I timed it without Boost on my ball 10 times from full swing to ping line and got 4 seconds Then did the same thing with Focus Boost turned on. Didn't swing, just timed the meter from full to ping line.
The result is that it was 6 seconds. So, that means since I got 2 more seconds, that is 50% slower than 4 seconds, more or less. So if you ever need to make a critical shot to win a match perhaps, then you can engage Focus Boost, release the meter and go out for coffee.
Proving once again that a test is worth a thousand speculations.
Disclaimer: Results may vary depending on your equipment and situation LOL