I have had 3 out of 4 segments clear 5 days out (out Fri, back on Mon). However, the processing time has been a little off - maybe 45 minutes from the flight time. The 4th - IAH-SNA is sold out in F (as it frequently is).

Although on a 2nd ticket we purchased (only 4 days before flight) the EUA on that cleared sometime between T-24 and T-30 hours - was higher fare than the 1st ticket purchased earlier. R was available in the T-4 to T-1 time period but no EUA. But EUA did work on the 1st ticket at T-5.

So EUA is working by erratically.