Hi ,
For those encountering fps drop on the EGLC runway , try to comment ANIM_hide and ANIM_show in file PBE_EGLC_GP_SOIL01.obj
(ANIM_begin and ANIM_end commands can be commented too, thought I found not necessary)
ANIM_begin
#ANIM_hide 1 2 sim/weather/runway_friction
#ANIM_show 0 0 sim/weather/runway_friction
ATTR_hard grass
TRIS 0 2916
ANIM_end
But be aware that switching between the dry texture used by PBE_EGLC_GP_SOIL01.obj and the wet texture used by PBE_EGLC_GP_SOIL01WET.obj will not work anymore