Finally found the perfect log to max out the LX25. Nice 10' white pine log was 25.5"x25" at the big end and 25"x23" on the other. Honestly the saw handled it well and no major issues. Fairly straight grain with few knots. Couple things that are certainly at the limit are the log holds in the back which only make it about 1/3 of the way up the log and the log clamp in the front barely makes it and is only about 1/3 up the log as well. On the second cut I removed the cone on the log clamp and got about an extra inch of space. Might be able to sneak in a 27" log if it was perfectly straight.
One log produced
13 3/4" x 8"
13 3/4" x 6"
4 2" x 3"
1 2" x 6"
1 2" x 8"
2 3" x 5"