yep… 400MHz is may be noticable ( ~8% more clock )… but the 100Mhz as from the OP ( 2% ) can not the reason for 20% performance gain. If he get 20% more, then its may be the changes in coming with SU9 implementation 
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Yeah you’re right. I did up the scaling resolution to 150% and put Terrain LODS to 250 and Ultra settings mostly, and capped to 30 like you suggested. Defiantly looks much better, Do get a bit of stutter here and there on the ground at larger airports, Mainly when panning around the cabin. But as you stated can’t really do much about it.
Yeah, that’s on Asobo at the moment sadly. It’s entirely down to CPU load. I found setting my off-screen Terrain Cache to Ultra helps.
I’m also suffering a bit from this pausing/stuttering that is caused by an issue with the AMD Bios (don’t know if you’re aware of it) that is due to be sorted this month sometime.
I fear a lot of people are piling in to Asobo over some of these stutters when actually it’s an AMD problem. We’ll only know for sure when the Bios update is released. Hopefully it’ll be very soon.
I’ll have to double check see if mines set to ultra when I next boot up. I doubt it but would lowering the refresh rate to 60hz from my regular 144hz be any good benefit in terms of smoothness? I do run Gsync so I don’t really get any tearing, Just a long shot guess lol
I actually didn’t know about that stuttering issue with bios, That’s interesting, I’ll have to read up on that. Haven’t actually updated my BIOS in sometime due to my laziness of taking my vertical mounted GPU out since it still runs 3.0 riser and I refuse to spend £80/$80 (more than double the cost of the actual vertical mount) on a 4.0 riser.
I use the Vsync in-game these days. If you do that remember that although it says 60/30 fps, what it is actually showing is 100% and 50%. Where it says 60fps for you it means 144fps, and where it says 30fps it means 72fps.
I believe that in the Nvidia CP you can set your monitors refresh rate to 60hz, and then 30fps in-game will mean 30fps in reality.
Hope that makes sense.
re the BIOS, these days it’s really easy to do. You just need a USB stick, AMD’s Bios does the rest. The instructions are on the relevant page.
Ahhh right. Yeah that makes sense. I do have Vsync turned off within the game as I have Vsync set globally on in the Nvidia CP so it wont ever peak over the 144fps and disable the Gsync.
I do also have the game capped to 30fps via Nvidia CP, So I may try setting it to 60hz just for MSFS and see how I get on.
Oh yeah, the BIOS is easy to update its just the fact I need to take out the entire GPU bracket out the case, take the card out the bracket, then place it back in normally. Up date the BIOS then turn the PCIE slot back to 3.0. Then reattach the card back to the mount and back into the case. I make it sound like more work than it actually is really lol.