Hi Folks,I'm in desperate need for some answeres here, and I hope someone might be able to give some feedback.Situation:I got myself a brand new PC and migrated my FS9 from my laptop (Installed FS9 and moved addons via ethernet from the old to the new machine). I use Ultimate Traffic and have replaced most of the PAI planes with AIA, FSP, or AIS to improove frame rates. Problem:Activating AI traffic just kills my new PC, eventhough the frames are awesome when AI is turned off. We all know that AI ca be hard on the performance, but usually things improove after take off and especially inflight. Not on my new PC though. Even when I load a new situation on an empty regional airport far away from any larger hub my frames are at best on par with my old computer, but usually lower. Without traffic the performance gain over the old PC is enormus! I expirimented with all settings (took me days), and I can pin-point the issue to airline traffic.Example:On any given flight for example in the U.S. frame rates on my new PC often drop below 12 and I get an average of maybe 15 to 17 or so at any given point in flight (no planes in sight!). Changing the resulution, turning the sliders down or using different planes or scenery has almost no effect on the frames. Turning airline traffic down...BANG: performance is through the roof. I often get 60 or 70 on average (max 125 !!) when using Megascenery LA with all other sliders maxed out.My sliders are exactly the same on both machines, and I have disabled some autogen objects (deleting that xml file), use 'highest performance clouds' by Chris (Thank you!) and have applied pretty much the same tweaks on both computers.I already suspected a corrupted scenery.bgl so I recompiled mine but that had no effect at all. I spend days on getting my traffic to where it is now and I expected my new Pc to run things better the before and not worse. What puzzles me especialy is that the frames usually improove inflight when less or no planes are around you. Not with my machine though :-(I would appreciate any thoughtd or feedback on the matter!Thanks a lot for reading.AlexSpecs:New Pc:Athlon XP 3200+, Radeon 9800 Pro 128 DDR Ram latest Omega drivers, 1Gig 3200 (400Mhz)RAM dual channel (2 * 512), Abit An7 MB, 160 Gig 7200 WD Sata HD, Dell 21" CRT.Old Pc:Intel P4 2,4, Radeon Mobility 9000 64 DDR Ram, 40Gig, 40 Gig laptop HD,756 Mb DDR Ram 2200, etc.

You probably have two active traffic.bgl files now. Just make sure to make one of them passive

What percentage of traffic are you running now? Also, are you running a much higher level of anti-aliasing? I find on my machine that traffic can be a big hit on performance, if you use too high an AA setting combined with a high traffic pct. I cranked my AI up to 100% last night to check out the new UT schedule updates, and with 4xAA my framerates with the default Cessna were fairly low (often dipping into single digits). This is all while my plane was parked. I don't normally run this much traffic, instead leaving it around 50% or so.

>You probably have two active traffic.bgl files now. Just>make sure to make one of them passiveYeah, I had that thought too so I checked when I began to troubleshoot this, but I only have the one created by Ultimate Traffic.Thanks for the input though!

Hi Craig,regarding your questions:>What percentage of traffic are you running now? I try to run 100% which worked fine on the old laptop. Of course you have to be prepared for some hugh hits when approaching busy airports but if it becomes unberable I turn it off during the final approach and reactivate it on taxi.As I said before: the curious thing is that frames are really low on my new machine even if not a single plane is in sight distance. This is something that simply never was a problem on the slower machine. Also, are>you running a much higher level of anti-aliasing? I have AA through the graphic card and it's set on 2x. It's off under FS. Thanks a lot for taking a shot at it. It's much appreciated!CheersAlex

I'm not sure what is going on exactly, but I have noticed with UT is that 100% traffic seems to kill frames, while turning it down a little, to say 90% seems to improve performance a lot. I can't explain how such a small change could have a big impact, but at least on my system it seems to. Oddly enough dropping from 90 to 80% has little impact.

Interesting find Craig, I'll check if 90% improves my performance noticably and get back to you.Cheers,Alex