I’m having the exact same issue. I got the same model and the heart rate data is often too low or it drops and I have to click it in and out to pick it up again. I only really notice it when on TR and zwift or when running(mainly dropouts). I don’t look too closely at outside rides but have not noticed major issues. Not saying there aren’t any, and I assume there are. But on a quick glance it looks about right.
Had same issues with wahoo tickr v1. The battery does seem to drain faster than my ‘old’ Garmin hr straps.
I’ve often wondered if it is that I have a dodgy pack of batteries that are the issue or or there are issues with tr and wahoo hr. If there is interference. I’ve a total wahoo system. Kickr and headwind and ELEMNT bolt for outside. Or if I’m a salty or very big sweater which wreaks the monitor. I’ve spent so much time trying to figure it out. In the last week I got a Garmin duel ant and bt hr strap and it has been faultless. But the tickr x is less than 2 years old. For context I use TR on my iPhone.
Overall it’s been a frustrating experience.