I think I'm cluttering up the comments section a bit too much, so I thought I would just start this thread. So let me briefly describe the problem.

After some invisible threshold is crossed, there is a delay between pressing the menu buttons (shift-c, shift-1, and any of the buttons in said menu), and the activation of the effect (opening the menu, equipment appearing, items placed, etc). It seems to be degenerative, but is reset when using the restart/continue old save selection. Mostly it isn't a huge issue, but after a while, it can get to be 5+ seconds between the button press and the activation.

Now let me describe some of the things I've ruled out, and some things I've tried:

1) It isn't strictly time dependent. I set up Camp Wolf with one high HMG, and did something else for 10 hours. I came back and the menus had no delay. Also, the delay didn't start any faster than normal.

2) It isn't strictly number or type of statics. I posted up at the main airfield, and put nearly 300 mixed statics at one post. There was no menu delay, except the delay experienced with terrible FPS. The menus came up precisely as fast as any other action activated.

3) It isn't about how many times you have saved. I saved 200 times in a row, once; played for 6 hours; and saved 200 more times. The delay started, but it was entirely consistent with a standard run. There was no increase in the delay after the bulk saves.

4) It isn't the number of times you get into a vehicle. I got in and out of a vehicle 200 times with no increase in the delay. I tried the standard truck, the marshall, and the slammerup. I didn't keep going because A) it seemed clear that wasn't the problem, and B) I never use any other vehicles.

5) It isn't the number of times your teammates get into and out of vehicles. I ran the same test as #4, but with teammates. The result was the same.

6) It isn't saving while in a vehicle. I ran the 200 save test from in a vehicle, with no increase in menu delay.

7) It isn't saving while in a moving vehicle. I ran the 200 save test while saving in a moving vehicle, with and without teammates. No increase in menu delay.

8) I tried with and without SLI running. I tried the land area test from above with and without SLI and there was no noticeable difference. The delay started at similar times, with similar severity.

9) I tried with one monitor and two monitors. I tried the gear collecting test and found slightly better overall perfomance with my Dell monitor, rather than my TV, and rather than both. But the menu delay was unchanged. All three runs showed the same severity after similar periods of time.

10) I turned off everything but Arma 3. I disconnected from the internet entirely, and made sure steam was in offline mode. I did the driving 200 save test, and there was no difference.

11) I turned off all of my mods and did the equipment collecting test, with perhaps slightly better performance and slightly less delay. It was still pretty severe, though. Still 3+ seconds.

I think those are the only things I've ruled out pretty conclusively. Next, let me explain some tests that were inconclusive.

1) Land area covered. In a few tests, I just drove around. Not collecting anything, no posts or camps, no shooting. I just drove around. While there was definitely noticeable menu delay by the end of each excursion; it wasn't very severe. Even considering how short each such trip was. Maybe 1/2 of a second longer than normal.

Of course this is very inconclusive because of the sheer number of other possibilities that could have arisen due to wide ranging.

2) I am tempted to think it has something to do with item collection. In a few tests, I gave myself lots of prestige and just ordered 50 of each type of crate. I collected all of the items from them and started rooting through the gear menu. There was a little menu delay, but it was about the same as the land area tests. Maybe an additional 1/2 second.

I tried just continuing through the mission, and after a few hours (I didn't collect anything else), the delay was similar. Perhaps a bit longer (3/4 of a second maybe), but nowhere near the crazy delays I have been experiencing.

So I tried some item collection tests where I didn't collect from crates, but collected from corpses. This resulted in 3+ second menu delays within an hour. Unfortunately, there are other possible causes, so this is also inconclusive.

3) I did a few runs where I just put up posts. I walked them off, and put a new post as close as possible. I got up to 26 posts, with guards, in the North East peninsula before my FPS started to tank The delay started somewhere around 14, but it didn't get over 1 second until 20. But it never got really bad. At first, I put only one guard per post, but when I got to 26 posts between the Molos Airport, Molos, and the Pier, I figured that was not the problem. I went back and started filling up the posts with guards, and my FPS tanked before I could even fill half of them. There was some menu delay, though; so something here may be tied to the problem.

4) So I tried tons of posts with only statics. I started at the castle on the hill on the south west peninsula. I covered the entire peninsula with posts. Not like @ Molos, but I had 17 posts on that peninsula. I only put statics, though. Also, I had to capture a camp, a couple posts, and I think my kill count was in the 50s. But I didn't collect anything. My FPS tanked before I noticed any menu delay. I couldn't test too much, because the FPS was making me nauseous.

I count this as inconclusive for 2 reasons. I had a lot of other factors, since I had to do so much killing and capturing. 2 my FPS tanked really quickly. Compared to all of my other tests, my FPS tanked harder, in about half the time, and with fewer posts/units.

I'm sure I've tried other things too, but those are the biggies. So my immediate conclusion would obviously be that it has something to do with collecting gear from corpses, but the fact that it happens less sevely even without gear collection, leaves open a number of possibilities.

For instance, maybe it has something to do with the way the enemy are assigned gear. This could account for the fact that there is some impact even when not collecting the gear. I don't think it's actually the gear itself, because adding gear mods doesn't seem to have a noticeable impact.

Or maybe it has to do with the process of getting the gear without opening a menu. Much like there is a delay if you have a double press assigned to a key. The single action shows slight delay while it waits for the second press imput. Maybe the gear is waiting to be collected by menu, but since it never is, it just waits. Add enough of those waits, and you get significant delay. This could be true on friendlies too, of course.

There are a number of things to try, but I kind of feel like I'm banging my head against a wall. SaOK, if you have anything else I could try on my end, please tell me. IMHO there are only 2 things that would make this mission perfect. Fixing this menu thing, and fixing the static placement on alternate surfaces. Also, if anyone else has anything I could try, please speak up. I am determined to find the cause of this issue, and will try practically anything to limit the possibilities.