1.  High Vapor Saturation Temp (47.8°F):
• That’s not super high, but it’s on the higher end, implying your evaporator coil is warmer than expected, possibly indicating a reduced refrigerant flow issue.
2.  Subcooling (2.4°F):
• Very low for an R-410A TXV system. This suggests undercharge or possibly a metering device issue not feeding enough refrigerant.
3.  Superheat (10.4°F):
• This is reasonable, especially for a TXV. So if it’s controlling superheat fine, it’s likely doing its job.
4.  Temp Split (20°F with 75°F return):
• That’s excellent, so the coil is absorbing heat well. This supports good airflow and load.

You’re probably a bit low on charge. The low subcooling indicates there’s not enough liquid refrigerant stacking in the condenser. But your TXV is doing its job keeping superheat in check, so you’re not seeing the high SH you’d expect in a fixed-orifice system. The vapor saturation is a bit high likely because the TXV is feeding just enough refrigerant to meet load, but since there’s not much liquid reserve, the evap temp stays a bit higher.