Ever since the PS5 got its own version of the Roblox app (rather than the PS4 version), a lot of our players in Croydon: London Bus Simulator | Play on Roblox have voice’d about poor performance in comparison to the old PS4 app that was available on both [playstation] consoles. There was no difference to the game during this transition period and players were opting for the old PS4 port due to the increased performance - until it was no longer available to them.
I believe we have voiced this via other channels but have never had the data to submit an official bug report. Players experience stutters, severely low frames or slow replication - even though this worked fine before this new version was released on the same device and same connection.
I have heard similar concerns from players on other games where they have also seen performance tank to the point they deem it unplayable and do not return.