Yep, it crashed at 41 GB committed before I upgraded to 32GB ram, so the extra 16GB just raised the crash barrier haha. (I had firefox running as well at the time, 56 - 32 physical - 32 pagefile = 8 GB in use by windows + steam + firefox)
It happened as well before SU3 but very rarely, since SU3 it happens almost daily after adjusting terrain detail down to 100 (used to run fine at 200 before)
I guess I triggered it over the arctic ocean by trying to redo a flight at higher LOD. (terrain detail 100 is about 1nm draw distance at 82 degrees North…) My full transcript of those attempts:
Rematch, setting up a night flight with higher LOD to see Alert in the morning
04-05 Barter Island PABA 2:37 AM LOD 8.0 22GB allocated, overnight flight)
16% mixture FL120 2428 rpm -13F IAS 121 TAS 143 GS 153 ETA 10:50 AM)
7:31 80°23’22.51"N 115°14’4.22"W CTD 56GB allocated memory leak problem, IAS 110 GS 132 in heavy fog
Third attempt, halving the LOD to avoid memory leak
04-05 Barter Island PABA 7:48 AM LOD 4.0 18GB allocated
17% mixture FL120 2424 rpm -25F IAS 129 TAS 151 GS 144 ETA 4:14 PM)
17% mixture FL120 2424 rpm -22F IAS 125 TAS 140 GS 144 18.1 nmpg 1.84 gallons reserve ETA 4:12 PM turbulance
Weather emergency, clouds top to bottom, icing going up slowly, descent to 2,500ft, 100% icing, 26 knot headwind
Memory leak starting to interfere again, maybe related to fog, from 18GB to 36GB since getting in the clouds
Over 44GB allocated, abandoning LOD 400 terrain detail 10 letting it recover
Clouds now down to ground level, fuel emergency, going for ground effect to save fuel before landfall
18% Mixture 8 ft 2440 rpm 7F IAS 128 TAS 120 GS 116 283nm 23.85 gallons left 39GB Allocated
Volumetric clouds set to low detail to speed up memory recovery
Memory not recovering setting everything to low/off sigh still 33GB allocated and rising again for no reason
18% mixture 15ft 2440 rpm 6F IAS 133 TAS 125 GS 123 237nm 21.85 gallons left 40GB Allocated 23.0 nmpg
What is it doing!!! 41GB allocated 21GB working set, everything is on low, broken
Pausing Sim to see if it recovers 3:10 PM (6:54PM UTC) sim fell 16 minutes behind due to stuttering 42GB Allocated
FS2020 is exchanging data with 5 different servers while paused slowly cleaning up memory
Memory down to 17.5GB seems its done 3:35 PM flight resumed (paused at quarter sim rate, 7:01PM UTC)
17% mixture 16ft 2440 rpm 7F IAS 124 TAS 117 GS 112 220nm 21.11 gallons left 19GB Allocated
Memory climbing up again, back in fog, 100% icing
34GB Allocated Paused again 4:00 PM (7:26PM UTC) Terrain ahead
17% mixture 15ft 2440 rpm 6F IAS 115 TAS 109 GS 105 183nm 19.35 gallons left 21.0 nmpg
13.35 useable gallons left, 183nm to go, need to stay above 13.7 nmpg for the remainder
Memory back down to 18.6GB turned off data until near Alert (keeping live weather)
FS2020 is still talking to 5 different servers while paused, not a lot of traffic but consistent
4:19 PM trying to continue, starting to climb at 100fpm, mixture to 19%
19% mixture 650ft 2440 rpm 7F IAS 128 TAS 123 GS 121 173nm 18.72 gallons left 15.8 nmpg 75% icing
19% mixture FL35 2440 rpm 6F IAS 146 TAS 147 GS 146 117nm 15.55 gallons left 17.6 nmpg ice free 22GB allocated
Quarter sim rate, kids want cookies, ie bake cookies
19% mixture FL57 2440 rpm 6F IAS 147 TAS 155 GS 154 50nm 11.69 gallons left 17.3 nmpg over mountains 23GB allocated
Final pause 20nm to go, reconfigure graphics settings and online data for landing after memory use settles down
19% mixture FL38 2440 rpm 10F IAS 160 TAS 163 GS 160 20nm 9.97 gallons left 17.4 nmpg descending 23GB allocated
Very low FPS, terrain updating randomly, allocated memory increasing fast
04-05 Alert Bay CYLT 6:08 PM (8:55 PM UTC)
Fuel used 71.65 gallons 16.85 nmpg 8h54 (adjusted for pausing, stuttering and quarter sim rate) 135.6 avg GS
And then the next flight from Alert down to Hudson Bay, not a single hitch. It’s so random. This morning I had it again near Chigago, ended up in the rain, PG areas, heavy stuttering, memory going up. I restarted the game, continued from the exact same place, all smooth (still in the rain) did a couple loops through Chigago, no further issues.
I normally just restart, but for that one long flight I wanted to prove to myself I could do it on one tank no matter what conditions. Hence can’t restart. It was still not quite a live flight since sim time fell over an hour and a half behind…
It’s definitely related to movement speed as slowing sim rate down slows down the memory accumulation. And I guess flying circles over the same place also helps, or landing frequently. It’s on long straight line flights where it’s prone to get triggered. However this morning it was the rain I think, since I was landing everywhere, flying circles over PG areas, pausing to take pictures with the drone, and still it triggered.
More memory is not the answer, a reload world option could help. I haven’t figured out yet how to resume at the right height after a restart, it always throws me back up to 8,500ft or so. (I was flying at 1,800 ft)