Train Bogies are very FPS-heavy to render
HB-Stratos opened this issue · 4 comments
Describe the Bug
Currently train bogies are very expensive to render, no matter if they are part of a train or just existing in a disassembled train. It seems though that especially a disassembled train causes a lot of FPS lag.
Reproduction Steps
- Place a long rail.
- Place a Station
- Place a good few bogies
- Observe a very strong drop in FPS
Expected Result
A few low poly meshes rendered in the world should not be causing this amount of lag. It makes the game unplayable in a bigger train yard.
Screenshots and Videos
Only one Bogie, and a few rails from earlier performance testing. They don't seem to affect performance much.
31 bogies here, disassembled. No station (so that possibly assembly mode doesn't cause more lag, but that seems to be insignificant too). My frames dropped to 58 from 280, in a medium trainyard and with the overhead of a normal world the lag this can go down to under 20 fps.
An assembled train seems to cause a good bit less lag than a disassembled one, though the drop from 280 to 90 is still quite significant.
The end result, barely 20 fps when looking at a medium train yard, easily over 100 when looking away.
Crash Report or Log
No response
Operating System
Windows 10
Mod Version
0.5.0c
Minecraft Version
1.18.2
Forge Version
40.1.0
Other Mods
none
Additional Context
No response
UPDATE: By assembling all the trains in my train yard I got a significant performance uplift. So the lag seems to come especially from disassembled train bogies. However, even this here is a strong performance drop from about 130 when looking away to 54 when looking at the trains.
I am on Windows 10 and can confirm the extreme lag being caused by train tracks.
The FPS goes from around 400-250 to 90-60
With any shaders installed it gets worse;
The FPS goes from around 180-100 to 45-25
Neither sliding down render or simulation distance helps.
Tried flyweel batching and instancing backend as well as turning it off. Virtually no difference at all.
Assembling trains did not help much for me.
Operating System
Windows 10 20H2
Mod Version
0.5.0c
Minecraft Version
1.18.2
Forge Version
40.1.0 or 40.1.20
Other Mods
flywheel-forge-1.18-0.6.4
forge-1.18.2-40.1.0 or 40.1.20
rubidium-0.5.3 + oculus 1.2.5 or optifine_1.18.2_HD_U_H6
Did you actually mean Train Tracks, or were you also referring to bogies? I am not getting too much lag from train tracks, but disassembled bogies can kill my game.
I got this, placing few bended tracks inside the render area causes the performance issue.
I set my render distance to 12 chunks so the potential fix is to limit amount of bended tracks per 24 chunks square.
Confirming that train tracks will tank FPS on AMD integrated graphics. Clients with NVIDIA GPUs (on something as low as mid-gen GTX to an RTX 3050) are not having this issue.
Minecraft Version: 1.20.1
Create version: 0.5.1.f