FSXA SCASM Light cause Ground Poly to Flicker

I seem to encounter a little problem when I added Runway lights using Scasm but I have no idea what I did wrong. Here are some pictures...

Here is with Scasm Lights

Here is without Scasm Lights

Here are my details on my Ground Poly, maybe it will help
Layer 8

Layer 12
-Dark Runway
-Dark Taxiway

Layer 16
-Light Runway
-Light Taxiway

Layer 20
-taxiway line
-runway line

Layer 24
-taxiway holdstop
-runway touchdown line

Light and dark basically means that the dark coloured concrete is at the bottom of the light one so that it gives a very nice effect of the runway

Here are some information about the airport which I think is relevant as well.
Altidude - 70ft and this was also set in Scasm(via AFW)
Grounds are flatten, using ADE. So yes, im not sure what causes the ground to flicker


Staff member
FSDevConf team
Resource contributor
You enter exactly the same elevation in the flatten, scasm runway and xml runway?
Its just weird that, without the scasm lights. The runway is fine. But when I place the scasm lights, the ground then flickers.
ok now I get you arno. haha thanks. I see I added 0.5 to my elevation. no wonder its not flat. thanks again arno. solved~