Speed sensor 2 still doubling activity

I know it's a common problem, but according to Garmin, it shouldn't happened if I have newer device!


So Garmin force the people with older watch/computer models to buy newer one, which still doesn't solve the problem! I have newest F7Pro and I got 8 odds short activities on 26km activity. Are the Garmin programmers all right? I will solve this with ONE condition in Garmin connect. If the time of activity in speed sensor covers with time of watch/edge recorded activity, then delete that activity. It's so simple and there is still no fix for that! Only delete the sensor from GC, but why, if Garmin claims it works!