I don't want to be a sceptic, but tricky tweaks can't be real soultions.
As you know there are four things that affect FPS.
1. your Hardwares, O/S
2. Fsx, Addon option settings,
3. Fsx.cfg (highmem etc...)
3. Your fancy add-ons ; UT2, REX, FSDT's KLAX...
Without spending $$, your Solution is limited to no.2
cfg tweaks? I dont' think so. Everybody knows Bufferpool, Highmem, Widescreen.
We wants solid 30 fps with fancy FSDT KLAX, UT2 100% traffic, AS2012 and 777, but we all know we CAN'T.
Even Hi-end PC (4770k 4.5 oc, GTX Titan etc) can't get it. :-(
You should lower somewhat you want least... in my case that is traffic density.
I get 15~20 fps with UT2 100%, FSDT KLAX , AS2012, and whole tweaks simmers told.
Take off is fine 20 fps... In Air solid 30 locked.
but landing at KLAX.. 10~15 fps, I just can't land with that stutter fps.
Spent whole weekend I finally realised I just can't get BOTH FPS & Quality.. I should sacrifice something.
Someone says that is Balanced Tweaks. yea.. 4096 HD texture, 6.5 LoD, Road traffic, Boats, ferries.. too heavy get with.
should I use deault KLAX instead of FSDT's?? no.. I spent 40$ for It.
Should I give up HD texture? no.. I love it too much.
Thus, my decision is traffic density. 40% UT2 gives me solid 20fps landing. No stutter.
yea 40% traffics just look like off-season Airport.. below 10 Aircrafts show at KLAX.
little weird but I can live with that :-3 Feel much better than 10~15 fps crowded stutter airport..
Thank you for simmers who eagerly search solutions, but dont spend too much time for it.
Before PMDG's Service Pack, whole bunch of tweaks are temporary solution.. you know it.
Just lower one of your options and fly with this wonderful bird :-)