[help]A huge lag issue with my watch that has not gone away since I got it. topic

Hello, I am really depserate for a fix or answer about what should I do. I have been using LG G Watch for around 4 months now. It is all great and good, but it is super laggy. Unusable most of the time. I can open google fit properly without lag perhaps once a week. Right now as I write this. It takes around 2 seconds to light up the screen. Some 3 secons to open up the menu (the search thing under which all apps are located). And google fit takes around 3 secons to open it up as well. Ah, and it froze up. Great experiance huh? Reseting and restarting the device does not fix it. Would a custom rom make it run faster? What should I do?

Few things to note,
Paired with Nexus 5 (stock 5.1)
Watch version is stock 5.0.2

Apps that are currently installed from market on watch , (though I did some tesing and even deleting most of these apps does not fix the lag)
Wear browser
calculator
calendar
gallery
wear launcher
wear messenger
wear aweare