SvenZ
May 17, 2021, 12:43am
23
I did a lot of testing after WU3, London is a special case, very dense PG data.
What you can do is set the rolling cache size sufficiently big and ‘mop up’ the area to get it all stored locally on a fast SSD. That still doesn’t guarantee the sim keeping up, but at least the bandwidth variable is gone.
I did all these tests with 16GB ram and a 6GB GPU (1060). I currently have 32GB now but now CPU speed is my limiting factor (2.2 ghz).
Photogrammetry for London is a lot of data, a lot more than NY.
I did some tests to figure out how much data there is
London City airport to Heathrow, 500ft altitude, Autopilot, noon, clear skies
Slowing down to give the game ample time to keep up (25% sim rate at max terrain with PG data)
8 test flights, identical conditions, checking data usage before and after the flight
No PG Data vs PG Data
Terrain 200 0.32 GiB 6.2 mbps / 4.38 GiB 85 mbps
Terrain 150 0.29 GiB…
It all depends on circumstances. My 100 mbps connection isn’t enough to keep up with the bursts it needs in the middle of London.
However it also depends on server load and data congestion. The tests I posted were from Sunday, network usage from FS2020 rarely went over 40 mbps. (Ookla speedtest reported 97 mbps down available) When I tried again on Monday, it mostly got up to 80-90 mbps, yet still with frequent pauses. Very different from the day before.
I pinged the 3 different servers it was…
It’s pretty common place with PC games to set your expectations lower than trailers show, depending on your system. FS2020 is a bit of an outlier in that it sort of self destructs when it falls behind.
As you see from the screenshots I posted earlier, my system can produce beautiful scenes, if I give it enough time to keep up (about 30 knots moving speed). Scroll up a bit and you see what happens when I fly at 180 knots.
It’s a balance between bandwidth, memory, cpu speed vs draw distance, alt…
It’s all relative, I’ve been stress testing the game to find the extremes. Just now I did a flight from Southend to Heathrow at 2,000 ft altitude. Much more reasonable height. 185 knots TAS, the sim had no trouble keeping up, network usage stayed just under 50 mbps over London.
[London 2000ft]
I’m running on a very modest setup, slow CPU, 16 GB ram, wi-fi, 1060, it’s a laptop.
This is on high settings with a couple things turned up to Ultra (trees, texture synthesis, windshield, 8x8 texture …
I did a scan of London this morning, flying low in a grid pattern with 30 GB rolling cache. Which is not enough. This search pattern at 500 ft downloaded 30.26 GiB in total
[London Scan]
Confirmed use of rolling cache as network activity stopped completely every time I crossed my path then go up again to 80 mbps treading new ground.
Enough data to get an accurate guess, it’s between 41 and 44 GiB of data in total.
I had to do this at half sim rate reducing my speed to avg 60 knots with netw…
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