My game runs smoothly until you sit down, it causes a lag spike

I mean yea removing everything around it makes the lag spike nonexistent . But am I just not allowed to have any seats in my entire game? Seems like this might be a more band-aid fix of just removing the seats rather then finding the root problem that is causing the lag spike.

I actually tried deleting all the books, and even deleting every script, and it’s STILL happening !

Thought it was something unique to my game lol. Having the same issue, sometimes my FPS goes from 60 all the way down to the 20s. Super strange bug

It seems like the lag problem has gone away now somehow? I played my game this morning and I didn’t lag from sitting, the issue must’ve resolved itself somehow.

The problem has not gone away for me. Still lags terribly when I sit down.

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I am currently having the same issue here. This is very strange. I wonder what’s the real cause of this.

Im seeing this issue too more so of recent with my Aircraft. I can’t figure out why considering everything was fine a few weeks ago and even more issue only shows up at random times and can last for a while.log_B0C24_microprofile_20200518-014802.html (229.6 KB) Im assuming its a recent Roblox change.

Fps drops from 60 to 20 but more so this happens even when not seated. Your issue also is similar to this issue: Need some help with Lag Spikes in my game! - #13 by demofocus where below someone posted a place which replicates for some reasons seat lag aswell as lag when not seated

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This is still a prevalent issue. I was forced to remove seats in general from my last commission and have tried multiple changes on the project. I’ve only discovered mitigating the lag through switching the lighting to compatibility. When I sit, both CPU and GPU increase, and if any player sits down, the rest of the players will experience a hit to their CPU and GPU.

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I’ve posted a bug report about this issue here: https://devforum.roblox.com/t/severe-performance-bug-triggered-easily-with-sitting-down-in-a-seat-with-many-parts-in-the-place/632675

Here’s some advice from the end of the post:

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Same, my Titanic game despite having dozens of cabins runs smoothly, but as soon as I sit in any chair on the Cafe Parisian it gets a lag spike

Bump, the issue still persists, randomly started happening recently, happens to any player that joins the game, reverted all changes (issue persists), even rescaling lags in studio

edit:

issue happens when a hat (skinned mesh) is under a model that is not a humanoid, i suspect the client continuously tries to find a humanoid when a descendant is added