A/C accumulator or “capacity control valve” cause weak cooling?

A/C temperature at the vent drops to only 80 degrees when outside is 90.

High and low pressures seem to be normal.

Uses scroll compressor which changes stroke instead of cycling on/off.

Shop manual says any clutch cycling (which I see) happens when “capacity control valve” does not reduce the cooling load.

After 85 miles of driving the temperature at the accumulator top which normally shows frost was 150 degrees.

Upon startup the accumulator temperature drops from 90 degrees to about 85 degrees.

Accumulator and compressor are both 8 years old.

Is it the “capacity control valve” or a clogged “accumulator“?