Real World Weather Defect (for advanced users)

There is a problem with the real world weather feature. Here's a situation: I'm flying Boeing 737 (25,000 feet), the airspeed is 330 KIAS, my heading is 360 (heading north), the wind (displayed with Shift+Z) is 180/40 - meaning, the wind is blowing directly from the south in a speed of 40 knots. The problem is that the wind doesn't change smoothly from zone to zone. Suddenly the wind shifts to 360/30 - causing an airspeed increase of 70 knots! My indicated airspeed instantly jumped to 400 knots! The result? I think you know the answer...

Am I the only one who has the problem (if it's a problem at all)?
I tried disable the "Download winds aloft with real world weather" option, but the wind was still there.