The meters jump up and down instead of following the actual audio peaks. It happens even with a steady tone. Is it corrected in the paid version?
There is no difference between the Light and the Pro version regarding the meter. The paid Pro version just have codecs with higher quality and more channels (up to 7.1) available.
Are you using a microphone or the soundcard output? Maybe there are low frequency signals interfering.
Here's a couple of video recordings of C.A.R. on two different laptops, one is win 8.1 and the other is win 10 Pro. I've tried two other audio s/w on both and there is no problem with their metering... Oh no, no, why can't I just attach a *.mov to this message? >:(