In one of the hundreds of things I read while getting ready for IQT, I read a comment that local tacview export should be disabled to improve performance.

I am running a decent system (i7-8700K, GTX-2080ti) and I had JUST run a test using a local only single player mission where disabling all 7 of my export items and saw a 0.00 FPS improvement. Thus I wasn't sure how important that comment would be, but I did it anyway because I'm a good rule-follower

Now, during my NTTR fam flight, we all reported poor FPS while in the revetments and a few stutters on approach.

So I repeated my tests of the costs of certain exports, on DS1 in a controlled environment and was shocked to find the following:

No export.lua entries, Golf-17 revetment, A-10C, after looking around then snapping view 5. Stable FPS: 48. Lower than typical on my system but very usable.

SRS, DCS-BIOS and Helios exports enabled, same conditions: Stable FPS: 41 (-7). A fair price to pay for all the simpit exports.

Added tacview to above, Stable FPS: 18 fps (-30) !!

So, on my system disabling local tacview recording is more than just a minor suggestion! Download the files after your flights as suggested.