Just had my flight to VHHH on QW789, when approaching 25L, I got a windshear without warning at about 300', went around, no big deal

But for the 2nd landing on 25C. this time it caught me on 20feet, no time for correction, got a very hard landing on -1600fpm, ouch.

After shutdown, I went to both aviaWorx Approach Report and  ACMI file to see what happened, I noticed on ACMI record, the wind shear is brutal, more than 20kts speed lose within a single datapoint (I think it's about 10Hz of data), it goes down, and back after few seconds. I'm sure it's wind while there it's not recorded in data, because on avia App rep, it shows I have landed on wind  074/21kts , while the reported wind is 320/4kt by ASP3D

The weather related add-ons I have  on this P3D453 is ASP3D(old stable 7877), and RealTurb, and not sure if A2A accufeel have a factor in, haven't seen this before (BTW the only thing new about this flight is I just bought WFSS' VHHH) but this is just too brutal to be true IMO, I wonder which add-on could causes this and what could be done to prevent further incidents like this.

@C2615

from my read ..... what was the TAF, why the 25's (atc ??) & did you have an atis

Windshears in ActiveSky are not being shown as a technical "wind change", but are rather special local "events" set on top. You can see them shown on the ActiveSky Map, if you happen to look there before it happens.
Two days ago I had a windshear that produced a 50 knots (!) tailwind (!) on final approach, and since the 747 windshear warning isn't able to pick up those kind of windshears - and since I was too stupid to notice on the ND - I slammed into the runway like the 747 was a paper flyer. Atis was still the same (6 kts headwind), so yes the windshear does not really change the "normal" wind in P3D.