I have an Edge 1030+ and I've noticed that on the last few rides I'm getting poorly rendered routes in in Garmin Connect Web.
At first I thought it was the 1030+ but I've confirmed that it is ok. Data recording is set at 1s. If you export the activity as a GPX and the reimport it it renders perfectly. However, if you export it as a FIT and import it you get the same poor rendering. I've tried both Edge and Chrome with the same results.
Importing the FIT into komoot is absolutely fine too so the data is definitely there. Side by side with Garmin Connect as shown below.
Has anyone experienced anything similar?