VR- Pimax: Parallel Projections or not?

[Snake122]

@Bad-Boy thanks!!! I’ll give that a try but won’t be able to until at least tomorrow with the holiday today.

But I would say in general, long term finding a way to not have to have it checked is important. For SteamVR 8k X 100% that’s almost 33 million pixels of resolution per eye (practically 8k, but each eye, each frame) compared to just over 16 million without it checked. At least in the past in DCS and quick looks in BMS 4.37, the percentages in SteamVR seemed to be comparable in quality between the two options 100% checked vs unchecked looks about the same. You can’t just lower the checked parallel projections mode down to the unchecked resolution and not see a large quality drop.

[Bad Boy]

@Snake122 said in VR- Pimax: Parallel Projections or not?:

@Bad-Boy thanks!!! I’ll give that a try but won’t be able to until at least tomorrow with the holiday today.

But I would say in general, long term finding a way to not have to have it checked is important. For SteamVR 8k X 100% that’s almost 33 million pixels of resolution per eye (practically 8k, but each eye, each frame) compared to just over 16 million without it checked. At least in the past in DCS and quick looks in BMS 4.37, the percentages in SteamVR seemed to be comparable in quality between the two options 100% checked vs unchecked looks about the same. You can’t just lower the checked parallel projections mode down to the unchecked resolution and not see a large quality drop.

Got 80 fps in TE and 60 fps in Campaign here with the option “parallel projections” checked in PiTool

[Snake122]

@Bad-Boy good to hear, I was seeing some frame rates in the 40s with my system in Instant Action with it checked and 100% but that’s been no optimization, just been trying to figure out this issue.

[frachy]

@Bad-Boy The solution is temporary actually.

1. 8kx is at best image quality when set to 200% supersampling (SS) (need edit steamvr.vrsettings), At 100% 8kx’s image quality is about half of its capability. And when set to 200% SS, with the high pixels of parallel projections (PP), the BMS will run out of 3080’s 12G VRAM, make the game runs very slowly.

2. Not everyone has a 3080ti or 3090, without the need of PP, more ppl can play bms vr with pimax HMDs.

[Snake122]

@frachy said in VR- Pimax: Parallel Projections or not?:

@Bad-Boy The solution is temporary actually.

1. 8kx is at best image quality when set to 200% supersampling (SS) (need edit steamvr.vrsettings), At 100% 8kx’s image quality is about half of its capability. And when set to 200% SS, with the high pixels of parallel projections (PP), the BMS will run out of 3080’s 12G VRAM, make the game runs very slowly.

2. Not everyone has a 3080ti or 3090, without the need of PP, more ppl can play bms vr with pimax HMDs.

3. Cockpit scale and FOV with parallel projections checked on is still off (too close to ICP, narrow FOV) as reported by @MandolinHarm although they are apparently working on a general fix for this in 4.37u1 possibly.

[Snake122]

@Korbi I saw your post in the collimated HUD thread, want to tag you here so you could see the parallel projections settings pros and cons. Checking the box should get rid of your current issues with a trade off.

Also after flying alittle more in VR last night, I agree with @frachy that checking parallel projections causes a pretty big hit in FPS even with the Steam resolution in auto.

[Korbi]

@Snake122 Hi Snake, I tried to tick the Box. Thats no option for me, it looks like a flat 2D image then.
Thank you for the headsup

[Snake122]

@Korbi thanks the reply, trying to bring all the Pimax guys together since we are probably one of the lesser used headsets

[koskar12]

Hi guys, I am 8KX user, and pretty much I agree with you. The trade off of PP is a significant FPS hit. I hope that the Devs will come up with an improvement for VR overall.

[atcgoalie]

Hi guys, I was asked in another thread to post my settings here. Disclaimer up front, I have not checked any FPS counters. I’ve tried with and without PP checked. The PP unchecked, I have a problem in which the mouse cursor will not line up with any of the objects (same issue snake122 mention towards that top of the post). With PP checked this isn’t an issue.

The biggest issue that I’m having is that I can’t seem to get an radio calls through the headset. I hear other sounds but not radio. It seems that the 7.1 setting that pimax requires is causing weird spatial sound problems. I’ve posted this in another thread. I will probably end up having to use headphones for now.