I went trough files in GournerFX which were suppose to fix performance drop and MaxVisualDistance, MaxStaticVisualDistance, MaxLongVisualDistance, MaxPlateVisualDistance were all set to 10000.0F because previously they were set too high for many to handle.
I wonder, could those high settings made it somehow into CUP, I think
this post and
this post could offer us some hints.
Especially those parts.
When enable the gurnerfx, I got only 10 FPS.
If I delete 8A318408BB7C513E in gurnerfx, I can have normal frame rate...
Through test, I'm sure one of the mod in monty-6 is causing the low frame rate.
Since most mods in monty-6 are plane modes, which means as long as I don't load those new planes in a map, there shouldn't have a low frame rate. But I do get frame rate problem on every map.
With all 27 Full monty packs & gurnerfx loaded, the game have only 10 FPS.
( NEW FINDING!!!: It's not only limited to Air.ini. any .ini in #DBW folder can have a effect on the slutter problem) Seems there is a conflict between the total .ini length and the gurnerfx.
I highlighted those parts because Storebor mentioned "object limit" but, if it was actually object limit causing fps drops, I doubt it could have been fixed by disabling GurnerFX.
Also, what is characteristic is user claiming he had fps drop on every map, its the same for me, regardless of what is in the view, where I had 50fps once now I have 25-30, where I had 25 its dropping to 10-13.
This performance drop is really severe at a times, I launched "Battle of Midway" single mission and while on stock game I could play just fine, in CUP I couldn't even start my plane because of 1 fps sideshow, not even exaggerating here.
The weird thing is, it was carrier and some planes, nothing that should have caused 1 fps, even looking in the sky didnt help much.
I think, I'll try to divide air.ini into few eras, for example 1939-1940, German/Russian Front, German\US\UK, JPN\USA and will enable them with JSGME.
Technically it should improve my fps (maybe not in MP)