Severe Client-Server Desync

this is not possible in my game as of now, the game is 5 years old and its somewhat hardcoded, there is nothing i can do to acomplish that unless i rewrite the full game.

Thank you for the information and your test results,

We were able to conclude the trains at Pinewood Computer Core caused the latency issues ourselves by doing A-B testing, trains and no trains, this is very strange as we’ve not seen this before and it’s almost as if physics handling has been nerfed on servers in general for it to perform so poorly now. What I may try is setting network ownership back to each individual driver so they handle the physics again from their client, we originally moved away from this because having the train physics handled serverside meant passengers on the trains had a smoother experience and it worked very well up until recently, where something fundamental to how the physics engine works seems to have changed.

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Can confirm the trains in my games are having issues, other player’s just stay in place for a few minutes, and teleport to the next after a few minutes. This is severely affecting gameplay…

Happening in Terminal Railways, Grand Continental Railways, my current unreleased Streamlined game, but also noticed it in Ultimate Driving Westover…

Really makes these all unplayable

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Yeah, I’ve also gotten into the same darn issue!

My ping is usually unstabely fluctuating, it seems as if servers are slowing down siginifically.
Is this due to the outbreak? Or this is for an other reason?

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I have just published a new update and went to check how everyone is doing and i noticed there were tank threads driving around without the actual tank.

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MFS X Games(Neo Warfare X, Naval 1918, Stardust, and Nebulon) are facing this same issue. The physics of things are completely janked to the point that ships teleport all over the place. To add on, there is still an issue where physics are causing major lag. This issue with physics appeared a couple updates ago and has made some aspects of Stardust unplayable due to the lag. I really hope this is resolved either with todays update or the next update, this prolonged lag is not healthy. Also would like to note, earlier playing games like Arsenal, the lag was just as bad. Probably safe to say it’s Roblox wide.

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My game is having some issues about the npc pathfinding or when i try to unanchor npc humanoidrootpart so the npcs can start moving they just get stuck and they cant move.

Its happening to me like some hours/minutes ago, its not a script error of my npcs cause everything was working fine in hours and i dont touched the script anymore i dont know why they freeze…

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That seems more like a replication bug on your end. I don’t see why such a specific part of physics would replicate, but not another bit.

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Before this update, the replication issue was already occuring and i haven’t updated the game since may 25th before publishing this update.
It doesn’t look like an issue on my end.

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We have identified a different feature which causes physics replication to lag in certain cases and have turned off that feature.

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I’ve noticed a huge improvement back to how it was before, thank you for finding and solving that issue!

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Oh, thanks. Please do not bring it back. My game was performing so badly while it was enabled.

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Its still kind of lagging to be honest.

Anyway, the ping is quite high in most servers, any ideas why?

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Thank you so much, character position is way way way more responsive than it was.
I still notice a little bit of mild ghosting around but I don’t remember if it was always like that, so it seems fine to me currently.

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Okay guys, I am still randomly disconnecting sometimes but it’s been kinda better.
However, the lag presists as always.

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This topic was marked as solved, so if you are going to keep posting to it, make sure you are following the bug reporting format. Doesn’t seem like any of the above replies contain (at the least) a game link or a video highlighting the issues.

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Cool so if it is an exploit then you know you’re off-topic here. This topic is about a physics change that was turned off (see staff response above). Not about exploiting. Make a new topic with more details.

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I believe the Physics replication being turned off may have caused more issues. Untill recently my Aircraft used to fly fine without any major fps drops however the same plane untouched or modified recieves random lag spikes that ive not been able at all to get to the bottom of even with microprofiler. Ive made several changes, turned off specfic parts of the server controller script and still this unknown issue appears which can drop fps from 60 to 20 for extended periods of time but goes away when for instance the Aircraft is landed. Im 100% sure its due to a recent change as ive checked and cross checked aswell as the fact issue wasn’t here till a week or so ago. Here my Microprofilelog_B0C24_microprofile_20200518-014802.html (229.6 KB)

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Is there any update on this side of things? Still seeing physics lag which wasn’t an issue a week or two ago and is delyaing my aircraft development aswell as I assume other games like train transport etc are seeing still this lag.

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My game seems to have the same issue with my AI. It happen randomly since 2 weeks.
it seems like we have a new issue with the same bihaviour.

am I the only one ?

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