Bug Reports

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VRC Raycast does not detect other players

When Collision Mode was set to "Hit Players" or "Hit Worlds And Players," my own avatar was hit, but other players' avatars were not. When using "Hit World" or specifying "Pickup" in "Hit Custom Layers," the target was hit correctly. Do other players' avatars also need to be running SDK 3.10.3?

tracked

Priority queue for events sometimes doesn't work for specific events

Hi. I host Disney-themed balls in VRChat, and I've had two balls where I had given roles with queue priority out to performers, and then when they crashed and tried to join back, they were pushed to the back of the queue instead of to the front of it. This first happened for my Disney Nature's Dance on August 9th. There was like a queue of I think 20-30 people. I was lucky I had my performer in on time for their song. But when I had my Disney Villain's Gala on October 18th, it seemed to be fixed, so I didn't say anything. But it came back again for my Disney Christmas Ball this past weekend. I want to make sure it's fixed for my next ball, as one time, we had a queue of 40-60 people, and it took people like 1-2 hours to get in. I so far have only had performers on Windows, so I don't know whether quest users are affected.

needs more information

If you have a lot of friends, instance loading becomes very slow

Once your friend count exceeds 2,000, it takes a very long time to load instances. I’ve been playing VRChat for nearly six years. I look forward to visiting various public instances every day. However, since my friend count increased, I’ve started experiencing a wait time of about 3 to 5 minutes every time I move to a new instance before it loads. I suspect that the system reloads the entire friend list every time the instance list is displayed, so I’d appreciate it if there were a better way to resolve this. Alternatively, I think a feature that allows users to bulk-manage friends they haven’t seen in years or have only met once could help prevent friend counts from growing excessive Translated with DeepL.com (free version)

tracked

Request for Video Player Maintenance and Improvements

The Video Player has accumulated quite a few small bugs and inconveniences over time. If technically possible, I would greatly appreciate it if these issues could be addressed. --- Black Flickering Issue with AVPro Player This problem started occurring shortly after the switch to Unity2022. The latest versions of iwaSync and YamaPlayer include their own workarounds, but older versions of iwaSync/YamaPlayer (when using AVPro) as well as players without custom fixes such as TopazChat Player still suffer from black flickering. --- Video Stuttering During RTSP Playback in Specific Conditions Especially in crowded instances on lower-spec PCs, When streaming RTSP at 60fps while VRChat is running at around 20fps, the video becomes noticeably choppy. Although switching the RTSP stream to 30fps currently avoids the issue, many users set OBS to 60fps because the TopazChat Player distribution page states that 60fps minimizes audio delay. --- Request to Move Video Player Processing to a Separate Thread Especially in crowded instances on lower-spec PCs, video playback often freezes for a moment due to various other processes. With RTSP streams, these interruptions cause playback delay to accumulate. The main causes include: Loading process when someone joins or when an avatar is changed Photo capture processing Display/hide toggling when culling is enabled Loading of stage effects on world VRChat's current CPU processing relies heavily on specific thread performance. On modern CPUs, specific thread often maxes out at 100% usage while the remaining threads (including E-cores and CCD1) stay underutilized. Separating the Video Player's processing into its own unrelated thread could potentially resolve these stuttering and lag issues. It may also allow better utilization of currently idle CPU cores.

tracked

Fallback materials break when accessory attached.

When applying a look with an accessory, my avatars head turns metallic in fallback shaders and some other fallback materials break. Repro: Select an avatar. Enable fallback shaders from the avatars section of the radial menu (others see the same when your shaders are disabled as well). Create a look for your avatar with at least one accessory. See your fallback appearance breaks. Video of this occurring attached. Image of how materials look with an accessory attached. I've seen this happen to other avatars, but in case this is avatar specific, this avatars ID is: avtr_7fe3df7a-eb5f-4a54-855e-5820589851d0

Infinite black screen

It happen sometimes when changing world, and i'm forced to restart the game (happen both in desktop and PCVR) it started since the perf-test/perf-test-old branch got closed, or around this time

tracked

Memory Leak Issues 2026

VRChat using absurd amount of RAM, more likely on longer sessions (around 2-4 hours). I haven't played around with it too much to figure out things that could be causing it, but I have noticed that the longer the play session, the more likely it is to happen. Ends up using all of my available RAM, causing freezing and stuttering which can only be solved by restarting VRChat. Does not reset on world/instance rejoin, or going to a new world. I have noticed that RAM usage will be stable, then at some point, it just starts to pile on more and more. ONLY happens on VRChat, every other VR application and non-VR application doesn't do this. Don't know if the results are different on Desktop. This has been happening for a while now and I first started noticing it with the release of the Lunar New Year items update. Maybe could be something that happened there?

tracked

VRChat Unity Animator Lag

The number of animation layers heavily affects performance due to unnecessary inverse kinematic calculations. Even blank animation layers with zero weight in the FX layer can trigger this behavior. The offender is seen in the profiler as Animators.IKAndTwistBoneJob. It runs as many times as the currently loaded animation controller with the largest number of layers. Although the individual run time is small, they very quickly add up. Slower CPUs seem to be more adversely affected by this. The time taken by these extraneous calculations quickly grows larger than all normal animator activity. This behavior only happens on animators that have a unity avatar/armature. When that is removed, this behavior goes away and the number of layers ceases to be a significant cause of lag. Most FX layers do not have any interaction with the armature, so it is likely that this behavior can be fixed for almost all FX layers. However from debugging the unity editor in visual studio, it appears the this happens in a native unity function named Animator::UpdateAvatars. It is likely that in most if not all cases, these calculations are completely wasted on FX layers and provide no benefit at all while consuming significant amounts of main thread time. Somehow these calculations need to be only run for layers that require them. Additionally providing a way to get parameters in sub animators would allow logic to be moved out of the main animator completely sidestepping this problem. They would not have a unity avatar associated with them, so this problem would not occur. It would also allow completely disabling animators when not in use. Please attempt to find a way to prevent this behavior or consider convincing your Unity contacts to implement a fix. This seems to be one of the largest contributors to animator lag. I have a full write-up with more profiler images and further explanations. https://docs.google.com/document/d/1SpG7O30O0Cb5tQCEgRro8BixO0lRkrlV2o9Cbq-rzJU

tracked

Swaping unity editor versions [Win -> Android; iOS -> Win; ect] via VRC SDK Panel crashes very heavy projects.

What it says on the tin, really. I have a really bulky project, with lots of IK usage, constraints, and various scenes and assets; in short, a project that takes a minute or two to load. If I swap platforms via the SDK panel, like from Windows to Android, the project crashes. Every time. If I open the project after said crash, it will be in the platform version that I told it to swap to. Why this is a major issue is that I also have had issues opening Substance Painter, other Unity projects, non-Unity games, even opening VRChat as a whole, after these crashes. I'd record the crashes if I knew OBS wouldn't crash along with said bulky unity project. This issue only happens on really heavy Unity projects, and does not happen on lighter ones. I will update this as I get more info. Maybe I'll record a crash on my phone.

Can't join newly uploaded world

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