Opponent aborted game affects game completion rate

Once I'm paired up with my opponent, even before the first move they'll time out (been happening more and more recently), game is aborted.

When I check my profile, game completion rate gets lower by a few %. This has been bugging me as I have a 100% completion rate since joining and now it's down to 90%.

No issues with my internet connection.

Hopefully this is not a feature (opponent time out affects both sides' completion rate). Have anyone encountered the same problem?

I dont care about the game completion rate. I sometimes accidentally click on a game. I abort it.