This is affecting any game that uses the default chat UI
I hope that developers can help contribute code fixes to certain issues such as this one someday. This one bug alone has been going on for too long and it is a pretty major one in my eyes.
The amount of performance issues caused by the new chat system alone in the past 2-3 years is unacceptable. I don’t mean to come off as complaining but it’s just not fair 
Developers shouldn’t have to turn to using custom chat systems all just to fight off performance issues caused by the default one (or any default system for that matter)
Workaround:
Any custom chat system that does not show the default chat UI.
I am using OpenTextChatService - Open-Source Implementation of TextChatService as it is identical to Roblox’s chat