Has been a while and FSX being an oldtimer, while P3D advanced, I was caught in the middle of world, not really knowing which way is right. FSX is what is, tweaked stable/unstable platform like it always was, and P3D kinda worse performing but quite stable.
I was also waiting for NGX/P3D, as this is my main aircraft I fly. In previous versions I also saw quite worse performances from P3D than in FSX with same scenarios. To be correct, there are still many, including no having the right anti-aliasing in P3D. However with DSR, that can be a bit compensated.
Now that NGX is out for P3D, I was able to do a small test on the VAS usage in both sims, which now include the same installation. I removed the FSX for good, it’s gonna be either FSX:SE or P3D, but I reckon P3D, as you will see in following screenshots:
The FPS in this screenshot fluctuate from 23 to 33 (with occasional FPS at 37 as in the screenshot, but it was not a rule) according to the progress in the task manager. When the CPU usage is at about 33% (lower), FPS are steady at 33, but as the usage goes up on all 4 cores to 100%, the FPS start to fluctuate from 23 to 33 FPS. VAS also starts with about 2520MB and climbs up to 2624MB. And a piece of climb happens each 100% CPU load. After a 2nd or 3rd climb, it steadied at 2624MB.
In P3D however:
The CPU is stable!
The VAS is stable!
The FPS are stable! 29-30.
After the same amount of time P3D has 2591MB, same VAS it started with and CPU doesn’t have those strange 100% loads. Of course, the Core0 is doing 100%, as my FPS is set to 60fps in both sims.
I also have to note that I use no BUFFERPOOLS in FSX:SE in this test, and my P3D is set with FFTF=0.01, which apparently is working fine on my system.
Of course do settings play a role when doing such tests, but I didn’t concentrate much on that, as I didn’t want to compare what FPS each sim gives, but that will be one of my next tests. Then I wish to continue through airport tests from addon devs which make addons for both platforms.
With 2.5 in my eyes, LM have created a milestone, which will probably make a good migration platform for many users.
Currently installed addons (in both sims, all same settings in all addons):
EZCA 1.17 P3D-beta
FTX Global 1.30
UTX V2.0 EUROPE
PMDG NGX 800/900