UL DTX cannot affect DL Quality (sub or full)
DL DTX affect DL Quality full but not DL Quality Sub.
Are the two last measurements show rxqual dl = 7 ?
Is it more than 2 measurements or less ?
I would say that the Bad Quality in DL caused the HO to be triggered. Is the HO COMMAND (layer 3) is received before the QUAL=7 or after ?
Please check your Qos stats : HO DL Quality Rate. Is it high ? (> 30%)
Are there a lot of drops ?
a drive test mobile would actually give you more than the rxqual : it will also show the BER. If you can find it, then what’s its value ?