Getting exactly the same thing - bad terrain tearing. Also controls are suddenly a problem. Brand new, very bad nose bounce, damping seems to do nothing to solve it. Seems like my stick, throttle and rudder inputs are all spiking a lot- no control problems like this in AH1 or any other game and nothing like this in AH2 before installing patch 14.
system:
CPU: AMD Athlong XP, MMX, 3DNow, ~1.4GHz
RAM: 256MB
Dx 9.0a
Win98 (4.10 Build 1998)
Display
Nvidia GeForce MX440, 64MB