Yes There are a lot of people getting the same erratic results, I AM VERY UNHAPPY WITH THE UPGRADE FOR THAT REASON. Telling us to adjust the clubs is not the answer, the infrared should read accurately. The new software is at fault fix the update!!!
Question

Having trouble with new update and driver readings
Since receiving update 2.5 I have been getting erratic driver reading. Yardage varies from 160 to330 yds and speed is from 60 to over 120 mph. I am using the opti Stix driver. Before the update this thing worked great but now it is difficult to play because I have no idea where my drives will end up. Is anyone else having this problem?
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6 answers

I talked to Jonathan at dancin dogg about this issue but really didn't get an answer. Since this seems to be a problem for a lot of people you would think they would address this problem quickly.
After the 2.5 3080 update the golf ball was set to a foam ball on my computer. I did not notice this at first. This caused wrong results. After chosing the golf ball selection to golf ball and not a foam ball all went back to normal. ( distance ect ). I use golf balls and not foam balls. Hope this helps someone.
I used the game yesterday with no issues with swing speed readings. Today I upgraded and am now seeing results 20mph different. I also had a friend (who is a golf pro) try since he has played the game with me before, and he is also getting very incorrect results after the upgrade.
I am also getting erratic results, 175 yrd 9 irons and such. Also huge differences in distance and swing speed between practice and play modes. Is there any way to revert back to the original software?
On Windows XP the speed ran fairly well! Now with Windows 7 the image is very slow. Is it the drivers? or something else causing the slowness.