Nope, accuracy is within 1/16 end to end, over and over. I cut lots of 6x6x12-16 ft. Even if the blade lead is off a bit very accurate.
Some logs with big internal stress will always be beasts. Not having to rotate the log is a godsend. I used a chainsaw mill (with crank feed) for a year, log handling can be “hurtful” and slow.
The swing blade does rock and roll, wiggle a bit, kinda freaky but easy to dial in and somehow a square even board when 4th side sawn. Frozen, half frozen, dry wet snow, all cut the same. Little if any drift over knots.
First couple cuts reduce waste. Can skim a thin slab off top and take a ****** slab board for paddocks , same on a side, then cut right to left 71/4 deep, 11/2 over in steps, fence board as second to last, then slabs gone too. Stop, flip 2-3 inch bottom slab (redog) flatten top. Now have a live edge 2 inch thick. On a straight log that’s 4 skinny slabs and a few triangles off the edges. Bunch of 2x8 and 3 fence boards all edged and a live edge. I use to build crates . I’ll get a video together.