I fitted Ltwoo TX 1x12s on my 2017 Canyon Spectral.
Upgrading from 1x11s SRAM GX.
I combined it with 9-50T ZTTO ULT cassette and YBN 12s chain.
Shifting performance itself is good, I can't say its any worse than GX.
It is reliable, predictable, shifts OK under load.
Indexing is good, easy to setup.
Quality of the components seems good.
The only thing that is a bit "iffy" is the cable guide on the derailleur, it is plastic and looks like it could break easily if something would hit the derailleur. Will see how it holds up...
What bothers me is the ergonomics of the levers, GX has much nicer position of the levers.
On TX you have to place your finger in a bit weird position to shift.
I did not experience any chain drops so far, but I do not run extremely aggressive trails.
My riding is mostly XC.