A350 Auto-compression broken

[nadeye341]

I'm tryna use the A350-900 ULR to do a flight, but I cannot sit 15-16 hours at my computer. While using time compression at 4x mid-flight, the plane just starts to bank 30 degrees and pitches straight down while the a/p disconnects. It works fine in 2x compression, but i would much rather use 4x. It's not a performance issue as I can run 4x on other aircraft perfectly.  My turbulence is on low, and I have all assists off. What else can I do?

[frank_m]

It IS a performance issue. The A350 needs more computing power than other planes.