Multiple RBX Games

When i click download installer it says 404 not found. And i actually have it from before and it says its 32-bit when i check my appilications. It does work though. Also, the roblox settings menu has changed and in this the settings menu is like the old one. In addition, (I dont know if it is just my PC) it makes my computer lag. Roblox freezes and when i switch windows to my web browser it just goes not resonding and becomes really slow. I think it is because of multiple RBX Games because my PC works fine when i am doing others things. Please fix all this stuff. 

btw. I do not exploit anymore.