When I read this thread yesterday I then tried this mission #3 in my BAT WAW:
had no significant fps loss when the bombs hit the water. Set some static cameras
on the ships path and watched the Do-17 attack from there: the same,
no significant fps loss. Info: see my specs below, my system is fixed
to a maximum of 60fps (because of 4k GSync Technology), in this mission
I have 55-60fps when in cockpit, ~ 45 and more when I use outside view.
When the bombs hit I have ~ 35fps for a short moment, but no stutters etc.
My system is stronger than yours, but not so much I think,
so you should not get such a 1-2 fps lag..
It could help to post your conf.ini [Render_OpenGL] settings,
there are many experts around who could have a look.
And as vpmedia adviced above:
please post your log file right after you run this #3 mission:
Read how to get the
log here, and the
instant log here.
Important: read
here which part(s) from the log to post
and
how to post it (also for conf.ini). (
code option!)