Different quality between postshot and playcanvas

Help & Support
1

Hi, i am working on a pipeline to test it for long term use and mass production.

i am new to Gussian Splatting, so if you can help please do.

the pipeline is 3dsmax Corona Render > Postshot > Playcanvas editor to offline on local server.

Rendered 266 Image covering the whole space, at 2k quality, 500k Steps, 2M Splat. no AA. Splat3 Points and camera Poses included.

i noticed always diffrent quality between all of them and i don’t know how to fix it, it seems in postshot very nice and Splats are not really visible much, but when i use playcanvas it is downgraded hard and very visible on most of the objects, i don’t know is it the training issue or platform, i tried many training times and ways instead of postshot, but postshot is best of all.

i need some help on where exactly i am doing the mistake, i was doing the trainig with AA then i read on one post which sounded related Model looks different in SuperSplat than in PostShot – has anyone seen this? - #5 by Christian_Nielsen that it shouldn’t be with AA, and it helped but still

You can find all screenshots here : https://docs.google.com/document/d/1q1JdEGWCr3f3OtR-w6EahhU5EW5EE2acsjfkbDJhA04/edit?usp=sharing

https://drive.google.com/drive/folders/1FJXYusmjh_LtxslxzgXvXZU99Fbwn-iB?usp=drive_link

Thank you :slight_smile:

2

link to it on superspl.at : Etheria 500ksteps - SuperSplat

3

in the UK (PlayCanvas team), I get this when trying to look at the screenshots:

Screenshot 2026-05-21 at 14.58.12
Screenshot 2026-05-21 at 14.58.12958×302 18.9 KB

which links here: https://help.imgur.com/hc/en-us/articles/41592665292443-Imgur-access-in-the-United-Kingdom

4

Sorry About this, i didn’t know @mvaligursky

i uploaded it to google drive all the screenshots

and here for more details

5

Interesting, thanks for sharing. I suppose this might be related to SOG compression, but not sure.
Try and drop both ply and sog version here: PlayCanvas Examples
to see what difference you get that way please.

6

@slimbuck for visibility

7

Hi @Silverstone_Engineer ,

I can’t determine if the issue you’re seeing is only in supersplat viewer or in supersplat editor too?

If you can send me the PLY I can take a look.

I also recommend loading the PLY you exported back into postshot and see if it’s the same. Postshot must transform spherical harmonics upon export and if the model has a rotation this can result in blurry reflections.

Thanks!

8

Sorry for this REALLY late reply we had 1 week Vacation.
while i was on vacation i increased the number of Images to train on from 266 to 700.

it increased the quality a bit, but i am still facing the same issue that it looks much much better on postshot then playcanvas or Superspl.at

i figured out that renderer called “compute” is getting almost the same resault as Postshot. i tried to put on the offline and it got me there.
if you saw the screenshots in this update you will find the diffrance, and i uploaded the PLY file Aswell.

Again sorry for the late reply and thank you for the support @slimbuck

9

i got the issue, it was that playcanvas that i downloaded offline was on V1.7 And apparantly playcanvas engine v2 is handling the rendering much better i downloaded with V2 and now it is Almost same as Postshot
and Training without AA is very Important.

10

By the way, V2 supports rendering with AA as well.

11

Thats Perfect Information, Thank you so much <3

12

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