Yes, of course they do. I have two LG G5s and both loose GPS signal often or take a long time to lock it.
Its so bad that using Waze at times is not possible. I brought the phone in to a FIDO store and store manager told me that her own LG G5's GPS is acting the same, she sent it in for repairs twice and they could not fix it. She said its a known issue and currently there is no solution. I also get dropped calls and other issues. I think it all started after FIdo's October update but not 100% positive. Waiting for tomorrow's update but I have low hope it will fix it. I have been with FIDO for a few years but never had cellular service that bad as now.