With FS2020 there is no doubt TAA 100 is giving the best EFIS legibility, until they change the implementation.
However for anything else in the cockpit, be it analogue gauges, switches or buttons, even at TAA 50 you can get good results as long as the render resolution is close to the headset original resolution, and in the case of the G2 you’d then use a higher OXR rendering scale to extrapolate these pixels into something with more details (this is how it works with the CAS Shader).
Thanks to the G2 high resolution you can even render to 1.5K x 1.5K and still get good legibility. This is the render resolution I’m settling with with reproj. for the 2070S (which means about TAA60/70 + OXR65)
The only in between is the integral lighting which is suffering at TAA 50 and needs a minimum of TAA 70 in my opinion.
If the following gets enough votes, FS2020 will let us use a lower TAA with a higher OXR SS for overall and outside view details, while keeping EFIS sharp and clear.
Please vote!
EFIS Screens Problems and Solutions for higher legibility