TTL feature and feedback

I have not seen any dialog about the effects of modifying TTL on the Peplink routers.
Since this is a pretty popular feature upgrade, I thought there would be more discussion.

What are the impacts of changing this setting; real, not theoretical?

Is it too early to expect some results and/or guidance?

Thanks!

My tests have been inconclusive so far. Its ‘felt’ like an improvement (like my traffic was then being prioritised) but I can’t be sure. I will test more and report back. What i need is a SIM with a restricted amount of tethered data available to prove it I think.