In my eternal tinkering to get some decent performance, as we know we cant run the PCL at native resolution..

I reduce the resolution down to 80% at this stage in the OpenXR Toolkit..leaving it native in the PCL Software and in Sim

My question is - is it better to reduce the resolution in PCL Software itself, in the Sim itself or keep it in the OpenXR Toolkit?

I'm not entirely sure if it makes a difference or if one is better in some way than the other...has anybody found that it actually matters?

Many thnaks

Doug

On 2/12/2025 at 9:13 PM, vonduck said:

In my eternal tinkering to get some decent performance, as we know we cant run the PCL at native resolution..

I reduce the resolution down to 80% at this stage in the OpenXR Toolkit..leaving it native in the PCL Software and in Sim

My question is - is it better to reduce the resolution in PCL Software itself, in the Sim itself or keep it in the OpenXR Toolkit?

I'm not entirely sure if it makes a difference or if one is better in some way than the other...has anybody found that it actually matters?

Many thnaks

Doug

Rightly or wrongly, I've come to the same conclusion that it is much better to leave one or the other programs in the chain to do the magic rather than fiddling too much with all of them.  I found that I was tweaking this up, then that, then the other and every one was doubling up or clashing in some way through the chain of software until I got to the final image through the headset.

At the moment - actually for different reasons - I set the Pimax Play render pretty low (specifically 'Medium') and then use OpenXR Toolkit to do nothing more than up the 'pixels per eye' adjustment, which I keep upping until it starts affecting performance...and that is at an impressively high level. 

But I have also, in the past, done it the other way round - putting up the Pimax Render to custom 1.2x or higher - and then not using OpenXR Toolkit at all.

And why do I end up with setting the Pimax render lower at the moment?  Actually, because BeyondATC started to become very difficult to run in VR with impossible lags - and pulling down the Pimax render value made a big difference.  But it's a moving picture (if you excuse the pun): windows, BATC, Pimax, MSFS and, no doubt others in the link, are all making regular silent, minor or major changes - and everything affects everything... 

Thanks AJ.. i knew you would know this with your awesome testing regime..

And agree, tinkering with to many things can either counteract the other settings or in my case, simply forget what i have done!

At this stage im fiddling with the OXR Toolkit resolution and have left the in sim setting to 100% along with the PCL app setting... 100% and using 90Htz upscaling to see what that does...

The quest continues!

I'll be following your results and conclusions with interest, @vonduck

 

Follow-up from my investigations as to RR..

OXRTK was working fine but performance degraded with many adjustments... so disabled that and tried:

PCL software render to 100%

In-game Render scaling set to 85% (i assume it a percentage?)

AMD Sharpening set to 180

In TAA mode

In the Fenix i was getting smooth performance and no noticeable lag...instruments were clear and readable..

I had tried default settings in-sim and reduced the PCL software render to 85 as well, but found the in-game resolution change suited my machine better..

Motto for me is the simpler the better... ill stick with this for the meantime and bypass OXR for now...

Interesting how the sim runs totally different on each machine!

9 hours ago, vonduck said:

Interesting how the sim runs totally different on each machine!

Trouble is, there is a myriad of other settings too in the convoluted chain of programs we are all using to get a result...and one difference can make a world of difference.

Sounds like you've made good progress, though 👍

It's best to reduce resolution in one program and one program only, so don't reduce a bit in SteamVR then a bit more in OpenXR Toolkit for example as it starts to get a little messy, let one program control the main resolution and work on other areas from there.

2 hours ago, MarcG said:

it starts to get a little messy

It does indeed! And when there is an update that resets things, the i cant remember what i have changed !LOL