After updating to v1.5.1 I noticed the aircraft was noticeably less stable than v1.5, especially on the roll axis. I kept a back-up of v1.5 so I compared the values that can affect flight performance for each version in Plane Maker. The only difference I noticed were the values corresponding to when the High Speed Artificial Stability System is in use. In v1.5 this value is set to 0,001kt, while in v1.5.1 it is set to 9,999kts. Which value is correct? v.1.5.1 is much more difficult to control than v1.5 was. I have uploaded 2 screen shot of the Art Stab screen in Plane Maker, which are labeled corresponding to their version. Thank you for you help.