A319 huge fps drop within 10 mins of starting

[SecretfarmerGal]

Ive not long had the A319 so on my first flight my fps at departure was a nominal 50 fps
1 hour into the flight at 35,000ft i'm down to 22 fps and i had to end the flight on subsequent investigation ( just having aircraft idle on the ground i'm noticing a huge fps drop within 10 mins ( down to 33 from 50 )
this is not happening with any other aircraft i don't know about A318 or 321 as i haven't flown them in a while . but the 319 currently is unusable

[RicardoLVFR]

strange. does it happen with the a318? or 321? confirm please.

[SecretfarmerGal]

ok did some tests i used an airport with no 3rd party airports around it no ai traffic and i removed GSX pro
all aircraft were sat on same active runway with engines running for around 20 mins each

A319 Huge frame drop within 10-20 mins as reported
A318 Huge frame drop same as 319
A321 frame drop although seemed slower

default 320 no frame drop
Atr 72 no frame drop
Captain Sim B777 no frame drop
pmdg 737-800 no frame drop
cowan sim helicopters no frame drop ( was flying them around for two hours earlier)

sorry to mention other companies but had to check it really was a LVFR issue
frame drop will then persist even on a subsequent flight, you have to restart sim to get performance back

[RicardoLVFR]

Ok, you don't have installed any FBW mod with our aircraft? or the horizon simulations?

Do you have the Kuro 787?

[SecretfarmerGal]

no none of those

whats Kuro 787? i only have asobo one

[RicardoLVFR]

Hi, we aren't getting this issue, but we did receive a report of this some weeks ago. We will further investigate and test.

[SecretfarmerGal]

Ok i have some more information on this.

All my tests were based on the camera sitting outside the plane so i decided to do cockpit soak tests.
If you stay in cockpit fps does NOT reduce but as soon as you switch to external view fps starts to degrade, switching back to cockpit stops the degradation but you don't win back the fps you have lost. ive also noticed as fps reduces render latency climbs

[RicardoLVFR]

Few weeks ago we did tests with a user who reported same issues.

We tried, removing the passenger cabin, removingn animated passengers, and no luck at all with the drop in performance.

Thing is, this only happen to certain systems. Not to everyone, so that's why its been difficult to pinpoint, because we can't replicate it.

So now you tell us an important piece of info, that only when external view is selected it happens.

[SecretfarmerGal]

More info
FPS loss still happens on external view when cold and dark with no systems turned on

[RicardoLVFR]

More info
FPS loss still happens on external view when cold and dark with no systems turned on

how many FPS do you normally get with PMDG?