# Pimax 8kx half life Alyx no PP large FOV with Fog, really amazing **URL:** \ **Category:** P2: 8kX\ **Tags:** fix-guide\ **Created:** [October 27, 2020, 5:14pm UTC](https://forum.openmr.com/t/pimax-8kx-half-life-alyx-no-pp-large-fov-with-fog-really-amazing/32630 "2020-10-27T17:14:35Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![Phoeniix21](https://forum.openmr.com/user_avatar/forum.openmr.com/phoeniix21/32/18948_2.png) [@Phoeniix21](https://forum.openmr.com/u/Phoeniix21)\ **Post date:** [October 27, 2020, 5:14pm UTC](https://forum.openmr.com/t/pimax-8kx-half-life-alyx-no-pp-large-fov-with-fog-really-amazing/32630/1 "2020-10-27T17:14:35Z")
Hello all, I found a way to play with the fog and all effects with the wide FOV with no PP(Parallel projection) on HL Alyx. The command to add in steam: -console -vconsole +vr\_fidelity\_level\_auto 0 +vr\_fidelity\_level 8 +vr\_multiview\_instancing 0 +vr\_shadow\_map\_culling 0 +sc\_no\_cull 1 With this I can play in great condition with large FOV, I didn’t see any clipping on the side of my field of vision. No image duplication. ![image](https://community.openmr.ai/uploads/default/original/3X/f/2/f2d4c7f50cb629974f9ee49ab7404e7d172200a7.png) ![image](https://community.openmr.ai/uploads/default/original/3X/c/a/ca205f006a3e59abadd6669d5267d44a01afab62.png) ---
**Author:** ![mindscan](https://forum.openmr.com/letter_avatar_proxy/v4/letter/m/439d5e/32.png) [@mindscan](https://forum.openmr.com/u/mindscan)\ **Post date:** [October 27, 2020, 6:29pm UTC](https://forum.openmr.com/t/pimax-8kx-half-life-alyx-no-pp-large-fov-with-fog-really-amazing/32630/2 "2020-10-27T18:29:03Z")
Thanks a lot for sharing! When i finally have the SS controllers, i will try out Alyx and along with it your tip! ---
**Author:** ![Octofox](https://forum.openmr.com/user_avatar/forum.openmr.com/octofox/32/27596_2.png) [@Octofox](https://forum.openmr.com/u/Octofox)\ **Post date:** [October 27, 2020, 7:51pm UTC](https://forum.openmr.com/t/pimax-8kx-half-life-alyx-no-pp-large-fov-with-fog-really-amazing/32630/3 "2020-10-27T19:51:29Z")
Nice, I’m using @NextGenVR’s one: -console -vconsole +sc\_no\_cull 1 +vr\_multiview\_instancing 0 +vr\_shadow\_map\_culling 0 +volume\_fog\_enable\_stereo 0 Is setting fidelity level 8 better than disabling stereo fog I wonder? [https://community.openmr.ai/t/how-to-play-half-life-alyx-without-parallel-projection-on-pimax-headsets-and-starvr-one/28751](https://community.openmr.ai/t/how-to-play-half-life-alyx-without-parallel-projection-on-pimax-headsets-and-starvr-one/28751) [https://community.openmr.ai/t/how-to-get-rid-of-rendering-issues-in-half-life-alyx-without-parallel-projection/29004](https://community.openmr.ai/t/how-to-get-rid-of-rendering-issues-in-half-life-alyx-without-parallel-projection/29004) ---
**Author:** ![DrWilken](https://forum.openmr.com/user_avatar/forum.openmr.com/drwilken/32/26997_2.png) [@DrWilken](https://forum.openmr.com/u/DrWilken)\ **Post date:** [October 27, 2020, 8:32pm UTC](https://forum.openmr.com/t/pimax-8kx-half-life-alyx-no-pp-large-fov-with-fog-really-amazing/32630/4 "2020-10-27T20:32:00Z")
> [@Octofox](#): > > Is setting fidelity level 8 better than disabling stereo fog I wonder? There’s still something weird going on with the fog, so I think we still need this to disable the stereo fog… 😉 I’m going to try a combination now (added “+sc\_no\_cull 1” and “+volume\_fog\_enable\_stereo 0” to OP’s suggestion): > -console -vconsole +sc\_no\_cull 1 +vr\_fidelity\_level\_auto 0 +vr\_fidelity\_level 8 +vr\_multiview\_instancing 0 +vr\_shadow\_map\_culling 0 +volume\_fog\_enable\_stereo 0 **EDIT: That seems to work very well…!** 😉 ---
**Author:** ![Octofox](https://forum.openmr.com/user_avatar/forum.openmr.com/octofox/32/27596_2.png) [@Octofox](https://forum.openmr.com/u/Octofox)\ **Post date:** [October 27, 2020, 9:37pm UTC](https://forum.openmr.com/t/pimax-8kx-half-life-alyx-no-pp-large-fov-with-fog-really-amazing/32630/5 "2020-10-27T21:37:59Z")
Great I’ll try the new combo as well! Edit I’m glad I rechecked this, for some reason I had previously set fidelity level 3 🤔 ---
**Author:** ![NextGenVR](https://forum.openmr.com/user_avatar/forum.openmr.com/nextgenvr/32/22179_2.png) [@NextGenVR](https://forum.openmr.com/u/NextGenVR)\ **Post date:** [October 27, 2020, 11:55pm UTC](https://forum.openmr.com/t/pimax-8kx-half-life-alyx-no-pp-large-fov-with-fog-really-amazing/32630/6 "2020-10-27T23:55:10Z")
I currently use > -console -vconsole +sc\_no\_cull 1 +vr\_multiview\_instancing 0 +volume\_fog\_enable\_stereo 0 I found disabling shadow map culling doesn’t seem to do anything, so I took it out. And I recommend keeping the automatic fidelity engine. Setting to level 8 is the highest and you may notice a performance hit in some parts of the game. (Level 3 is 100%) P.S: All those commands, with the exception of the fidelity ones were discovered by me and shared a long time ago on this forum. Also for in-Game graphical settings I recommend setting Characters → Low, Shadows → Medium or High, Fog → Medium It saves a huge amount of performance while having practically no difference to the image quality. ---
**Author:** ![Fitzy](https://forum.openmr.com/letter_avatar_proxy/v4/letter/f/7ba0ec/32.png) [@Fitzy](https://forum.openmr.com/u/Fitzy)\ **Post date:** [October 28, 2020, 12:02am UTC](https://forum.openmr.com/t/pimax-8kx-half-life-alyx-no-pp-large-fov-with-fog-really-amazing/32630/7 "2020-10-28T00:02:27Z")
What exactly is the fidelity % corresponding to? ---
**Author:** ![NextGenVR](https://forum.openmr.com/user_avatar/forum.openmr.com/nextgenvr/32/22179_2.png) [@NextGenVR](https://forum.openmr.com/u/NextGenVR)\ **Post date:** [October 28, 2020, 12:05am UTC](https://forum.openmr.com/t/pimax-8kx-half-life-alyx-no-pp-large-fov-with-fog-really-amazing/32630/8 "2020-10-28T00:05:04Z")
You can read about it here: > **[Half-Life: Alyx performance analysis (or: why low graphic settings produce a...](https://petrakeas.medium.com/half-life-alyx-performance-analysis-or-why-low-graphic-settings-produce-a-sharper-image-4d17fb8c19bb)** > > I have been a happy PSVR user for more than 1 year and due to Alyx, I got the Valve Index. Alyx and the Index live in the PC space and… ---
**Author:** ![Fitzy](https://forum.openmr.com/letter_avatar_proxy/v4/letter/f/7ba0ec/32.png) [@Fitzy](https://forum.openmr.com/u/Fitzy)\ **Post date:** [October 28, 2020, 12:06am UTC](https://forum.openmr.com/t/pimax-8kx-half-life-alyx-no-pp-large-fov-with-fog-really-amazing/32630/9 "2020-10-28T00:06:23Z")
Ah, cool, it’s just another supersampling toggle. ---
**Author:** ![NextGenVR](https://forum.openmr.com/user_avatar/forum.openmr.com/nextgenvr/32/22179_2.png) [@NextGenVR](https://forum.openmr.com/u/NextGenVR)\ **Post date:** [October 28, 2020, 12:09am UTC](https://forum.openmr.com/t/pimax-8kx-half-life-alyx-no-pp-large-fov-with-fog-really-amazing/32630/10 "2020-10-28T00:09:16Z")
Alyx’s auto fidelity engine ensures you maintain a smooth framerate in all areas of the game. Some parts of the map, fidelity can go up to 8 and in others it may go below level 3. But with the 4K resolution of the 8KX you likely won’t notice when this level changes. ---
**Author:** ![Fitzy](https://forum.openmr.com/letter_avatar_proxy/v4/letter/f/7ba0ec/32.png) [@Fitzy](https://forum.openmr.com/u/Fitzy)\ **Post date:** [October 28, 2020, 12:09am UTC](https://forum.openmr.com/t/pimax-8kx-half-life-alyx-no-pp-large-fov-with-fog-really-amazing/32630/11 "2020-10-28T00:09:24Z")
I might disable MSAA as well. Don’t need anti aliasing blurring everying with dual 4k screens and 1.25 pitool resolution scale. ---
**Author:** ![NextGenVR](https://forum.openmr.com/user_avatar/forum.openmr.com/nextgenvr/32/22179_2.png) [@NextGenVR](https://forum.openmr.com/u/NextGenVR)\ **Post date:** [October 28, 2020, 12:10am UTC](https://forum.openmr.com/t/pimax-8kx-half-life-alyx-no-pp-large-fov-with-fog-really-amazing/32630/12 "2020-10-28T00:10:36Z")
I think MSAA is still important even with the 8KX. I notice a big difference when it is disabled for example in beat saber. But you can try it and see how the image looks for you. ---
**Author:** ![Fitzy](https://forum.openmr.com/letter_avatar_proxy/v4/letter/f/7ba0ec/32.png) [@Fitzy](https://forum.openmr.com/u/Fitzy)\ **Post date:** [October 28, 2020, 12:11am UTC](https://forum.openmr.com/t/pimax-8kx-half-life-alyx-no-pp-large-fov-with-fog-really-amazing/32630/13 "2020-10-28T00:11:06Z")
Yeah, I’m not a fan of most AA implementations in VR. Subjective of course like most things in VR! ---
**Author:** ![hammerhead\_gal](https://forum.openmr.com/user_avatar/forum.openmr.com/hammerhead_gal/32/24859_2.png) [@hammerhead\_gal](https://forum.openmr.com/u/hammerhead_gal)\ **Post date:** [October 28, 2020, 1:57am UTC](https://forum.openmr.com/t/pimax-8kx-half-life-alyx-no-pp-large-fov-with-fog-really-amazing/32630/14 "2020-10-28T01:57:36Z")
I hope you don’t mind if I collect the link here 👇 # [Collecting useful posts about 8KX](https://community.openmr.ai/t/collecting-useful-posts-about-8kx/32543) ---
**Author:** ![blitze](https://forum.openmr.com/letter_avatar_proxy/v4/letter/b/5daacb/32.png) [@blitze](https://forum.openmr.com/u/blitze)\ **Post date:** [October 28, 2020, 4:17pm UTC](https://forum.openmr.com/t/pimax-8kx-half-life-alyx-no-pp-large-fov-with-fog-really-amazing/32630/15 "2020-10-28T16:17:09Z")
MSAA is quite taxing on ones GPU - for myself I prefer to either bump up SS in PiTool or use FXAA but with FXAA, make sure it is enabled in the Nvidia Control Panel. Horses for courses. ---
**Author:** ![Timo.H1](https://forum.openmr.com/user_avatar/forum.openmr.com/timo.h1/32/15706_2.png) [@Timo.H1](https://forum.openmr.com/u/Timo.H1)\ **Post date:** [December 3, 2020, 5:27am UTC](https://forum.openmr.com/t/pimax-8kx-half-life-alyx-no-pp-large-fov-with-fog-really-amazing/32630/16 "2020-12-03T05:27:42Z")
Hello i have an i7 9700k. and it runs on 8x 4.9 GHz. I have an RTX 3090 MSI X Trio. Unfortunately used up - vr\_multiview\_instancing 0 too much CPU power. My CPU reaches 100% is there another way to reduce the CPU performance? with parallel projection and without + vr\_multiview\_instancing 0 it works better. but GPU is higher then. is there any other option? ---
**Author:** ![risa2000](https://forum.openmr.com/letter_avatar_proxy/v4/letter/r/e36b37/32.png) [@risa2000](https://forum.openmr.com/u/risa2000)\ **Post date:** [December 3, 2020, 11:46pm UTC](https://forum.openmr.com/t/pimax-8kx-half-life-alyx-no-pp-large-fov-with-fog-really-amazing/32630/17 "2020-12-03T23:46:17Z")
I am not sure what you are trying to achieve? Just by name, I would guess that “multiview instancing” uses multiview rendering, which is supposed to save GPU and CPU perf. Disabling it should then increase the perf. hit, which it seems it does. ---
**Author:** ![Fitzy](https://forum.openmr.com/letter_avatar_proxy/v4/letter/f/7ba0ec/32.png) [@Fitzy](https://forum.openmr.com/u/Fitzy)\ **Post date:** [December 4, 2020, 12:02am UTC](https://forum.openmr.com/t/pimax-8kx-half-life-alyx-no-pp-large-fov-with-fog-really-amazing/32630/18 "2020-12-04T00:02:11Z")
You don’t need to use Parallel Projections if you use the commands in this thread in the launcher. ---
**Author:** ![neal\_white\_iii](https://forum.openmr.com/user_avatar/forum.openmr.com/neal_white_iii/32/3038_2.png) [@neal\_white\_iii](https://forum.openmr.com/u/neal_white_iii)\ **Post date:** [December 4, 2020, 1:31am UTC](https://forum.openmr.com/t/pimax-8kx-half-life-alyx-no-pp-large-fov-with-fog-really-amazing/32630/19 "2020-12-04T01:31:54Z")
Here’s the info, so you don’t have to hunt for it… > HL Alyx can be run with Parallel Projections turned off, but you need to configure the “Launch Options” in Steam to: (Discovered by @NextGenVR) > > > -console -vconsole +sc\_no\_cull 1 +vr\_shadow\_map\_culling 0 +vr\_multiview\_instancing 0 +volume\_fog\_enable\_stereo 0 From: [https://community.openmr.ai/t/tips-for-getting-the-most-out-of-your-8kx/32487?u=neal\_white\_iii](https://community.openmr.ai/t/tips-for-getting-the-most-out-of-your-8kx/32487?u=neal_white_iii) ---
**Author:** ![risa2000](https://forum.openmr.com/letter_avatar_proxy/v4/letter/r/e36b37/32.png) [@risa2000](https://forum.openmr.com/u/risa2000)\ **Post date:** [December 6, 2020, 12:25am UTC](https://forum.openmr.com/t/pimax-8kx-half-life-alyx-no-pp-large-fov-with-fog-really-amazing/32630/20 "2020-12-06T00:25:15Z")
I believe when I tried it (together with the fidelity mod) I had a problem with the lighting on several occasions. One I remember was in the metro station (with the heavy combines) I saw the lights on the wall and their projection was off to left. Eventually I went back to PP on. I wonder though, if multiview instancing is optimizing the rendering for a single pass (shading), could disabling it have actually the opposite effect? So you win something on having canted rendering and then lose something on disabling an optimization. I would guess the benefit could eventually depend on the size of the FOV you set for rendering, and that on small FOV this can even be a disadvantage (if anyone plays Alyx on Small). [Next page](https://forum.openmr.com/t/pimax-8kx-half-life-alyx-no-pp-large-fov-with-fog-really-amazing/32630.md?page=2)