Varjo Aero: refresh rates...the missing options.

[geert]

Hi all,

So I got myself an Aero about 1 week ago coming from the HP reverb G1. On the reverb I used to play at 90Hz with motion smoothing which used to work fine at 45 or sometimes even 30FPS (had a 2070 super back then) but only in single threaded DCS. The 2.9 update caused a nice performance boost to my system but HT and motion smoothing in my G1 didn't get along very well, so I switched to 60Hz which I really liked after the getting used to the flickering part. In the meantime, I had already switched to a 4090.

The good news is that motion smoothing on the aero seems to work pretty well with DCS HT but it's definitely not perfect and still, I really liked 60 FPS on 60 Hz so no motion smoothing at all. The bad news is that 90FPS on the aero with my (or virtually any) system is almost unobtainable. So, why is there no option to change the refresh rate on the Aero? Apparently (I never tried) 72Hz seems to be a good compromise between the very stable 90Hz and quite flickery 60Hz refresh rates. Obviously, 72FPS is MUCH more in reach than 90FPS for most of us. Technically, I would THINK that it would/should be feasible?

So I asked Varjo that question yesterday and the guy that answered seemed sympathetic and asked the team about it. Unfortunately, there are no plans to implement the refresh rate to be adjusted, but at least it was now on their radar (his words).

It almost seemed like it was the first time they got that request so I am wondering if it might be a good idea for others do the same. Dunno if something like that works, but maybe they're just not aware of the huge benefits, in contrast to the competition.

You can make a ticket at:

https://support.varjo.com/hc/en-us/kb-tickets/new

Cheers

[mmike87]

You have a 4090? Are you CPU bound? I have a 13900k and a 4090 and get 90 with DLSS on Quality and DFR configured. I adjusted the outer ring down to .7 and the inner ring to I think 1.7. everything is razor sharp and I'm at 90 most of the time, but I leave MS on to handle the drops. I'm at 39 ppd in Varjo Base. 

Edited December 17, 2023 by mmike87

[geert]

CPU is a 12600K @ 5.1 GHz. I'm not sure if that means its the bottleneck. I haven't seen much CPU benchmarks for DCS lately. My DCS settings are pretty high. DFR is on (using varjo-foveated v0.2.0). I tried quad views foveated briefly, but seemed to work much worse. Maybe I am missing somethings here? Would be nice to be able to run @90FPS but I can only reach that in low density scenes. Caucasus sometimes works at 90FPS. My benchmark is flying over Beirut in the hornet which is obviously quite demanding. Also seeing some eye tracking artifacts sometimes. I found that SSS (something something shadows) does not seem to be compatible with eye tracking (yet?? I hope). Here's my settings:   I'm experimenting with ppd in Varjo base, but does not seem to matter that much. Usually down to 35ppd.  

Regardless whether I can improve things, a 20% (free) performance increase (72 vs 90 FPS) would not be bad thing, also future proofing wise.

[Hammer3246]

6 hours ago, geert said:

CPU is a 12600K @ 5.1 GHz. I'm not sure if that means its the bottleneck. I haven't seen much CPU benchmarks for DCS lately. My DCS settings are pretty high. DFR is on (using varjo-foveated v0.2.0). I tried quad views foveated briefly, but seemed to work much worse. Maybe I am missing somethings here? Would be nice to be able to run @90FPS but I can only reach that in low density scenes. Caucasus sometimes works at 90FPS. My benchmark is flying over Beirut in the hornet which is obviously quite demanding. Also seeing some eye tracking artifacts sometimes. I found that SSS (something something shadows) does not seem to be compatible with eye tracking (yet?? I hope). Here's my settings:   I'm experimenting with ppd in Varjo base, but does not seem to matter that much. Usually down to 35ppd.  

Regardless whether I can improve things, a 20% (free) performance increase (72 vs 90 FPS) would not be bad thing, also future proofing wise.

13900/4090/64MB/SSD

The only thing that really helps me to keep a fairly stable 90fps with most settings is to lower the vis range to high or less.

[geert]

I did try a bunch of things yesterday, like setting visible range to high and even decreasing lots of other stuff, like shadows on flatt, clouds high (or even standard), ppd in Varjo to 35 and it doesn't really matter much. Even in Caucasus I get 45FPS lots of the time, like flying low over a forest and dogfighting. Only exception seems to be the straight of Hormuz (PG) map which works a bit better. So it kinda seems I'm CPU bottlenecked but is there any other way to check this? Also, I have a 12600K with hyperthreading enabled. Does it actually help to have more cores with DCS HT right now? Any help is certainly appreciated, thanks!

[Phantom711]

vor 36 Minuten schrieb geert:

So it kinda seems I'm CPU bottlenecked

I would say, that this is unlikely unless there are really a lot of other AI units.

Install the OXR Toolkit companion and you can see your CPU and GPU frametimes.

 

EDIT: Also your testing methodology is a bit flawed, because you still use motion smoothing while you are doing those tests. So no matter what you change, all you know is, that you are not hitting 90 FPS, but whethter it`s actually 50 or 89...you have no idea.

Edited December 18, 2023 by Phantom711