For the first three years I played this game, moving from Hack up to Legend, I was an off-ding putter. I only played match games, and I was totally happy with my 65 average. Sometime last year I decided to get more serious about the game, and I realized immediately that off-ding putting wasn't going to work if I wanted to shoot in the 50's.
If your goal is to improve, I'd suggest learning the JC Snead method of putting on the NV. That's the best technique I've found. It doesn't cover every putting situation, but it's the best foundation. You'll have to tweak it for downhill puts and big breakers, but it works for probably 70% of the putts you'll face.
There are other techniques, like aim points and cup counting, on the NV that help when a putt doesn't look right. And sometimes off-dinging is still necessary on top of using these techniques. In other words, you need a few different tools in your putting tool box that you can use for different situations, and you only learn how and when to use them through experience.
I'd highly recommend learning JC Snead as soon as possible. I had three years of mostly 2 and 3 putts built up, and I'm paying for it now. Trying to get my putting stats down has been a huge ongoing pain in the as s.
Also, this game is mostly about putting. If you get really good at it low scores will follow.
If you only want to be an off ding putter, and a low average isn't a priority, then I'd suggest changing the dot speed on the new version to Classic. That's as close to flash as you'll get, and putting might make more sense for you with faster dots.
Good luck.