I have two Wheeltop wireless shifting systems, one is OX 2.0 on my gravel bike and the other is the GeX on my Road bike. I have put about a bit over 1000 miles on each bike in the past year.
Recently I just found that I can change their shifting mode from Standard to "Race" and the shifting speed is extremely fast and I like it.  Question: does anybody know how long will the derailleur last when set to race mode?

IIRC, race mode just keeps the RD from going to sleep between shifts so there is less delay on shift requests. It won’t have much affect on the RD itself, but will use the battery charge faster. If you use it, switch it back to standard mode after your ride.