I have a question to a problem that has both myself and my Giant dealer perplexed.

First the back story; Back in 2018, Giant replaced my crashed and broken TCR 3 with a Defy Advanced. At this time, I also added a Giant Neos basic computer and Ridesense that the bike is made for. It all seemed to work ok, but after a while, the Neos dropped all the stored data. After it did this again, I scrapped that and bought an iGSPORT computer that paired with the ridesense. Long story short, I ditched that one due to unacceptable Chines information demands and bought the NeosTrack. in June of 2020. Then I started to get issues. It took me some time to get used to it, but all in all, it does what I need, time, distance, cadence and heartrate, just the basics. However, the problem at first was it dropped cadence and distance was wrong. Speed seemed to be ok but may have been on the low side thinking about it now. What I figured out was the battery was loose and losing contact (or so I thought). I "fixed" that by adjusting the tiny + contacts and adding a small piece of extra foam under the cap. During the latter part of last year, it seemed to work fine, no issues after that. Moving on to now, I have my bike on a trainer in the house with GPS off. What happens now has me totally puzzled. The cadence and heartrate (Ant+) work without issue, but the speed drops every few seconds (about 45-60). I borrowed an older ridesense transmitter from the bike store manager and rode two test rides of 30 mins. It worked perfectly no speed dropping So, he loaned me a brand new Ridesense and right out of the box, same issue, dropping speed. I have checked and rechecked the magnet positions, red light comes on and I can hear that feint tick.

SO, here's the question; Is it just my bad luck or has anyone else had this problem?

Giant are useless with customer support, referring me to my dealer and he knows as much as I do except his Neostrack seems to work fine.

I'm at the point of ditching this, but I really can't afford the Garmin other than maybe changing the transmitter.

Help and advice would be appreciated.

EDIT: well I just found out that Giant have discontinued the NeosTrack, apparently without warning to the public. After extensive trial and error, I discovered that it was indeed my NeosTrack head unit that was the problem and not the Ridesense as I had first thought. When I returned it to the dealer, even he did not know this had been discontinued. Giant told the dealer to refund my money. Basically screw Giant accessories in future.