Alright, read the following.
Help Center wrote:
I'm experiencing lag spikes or stuttering during play!
Lag can be caused by a variety of things. Here are some common causes that may help if you're experiencing lag:The game's performance is choppy or stutters frequently.
- Background processes, anti-virus software, etc.. Try turning them off while you are playing osu!.
- Viruses, spyware, trojans. If you don't have any anti-virus software at all, and your operating system and osu!'s performance seem choppy, you should try scanning your system with an anti-virus scanner.
- Your computer may be in need an upgrade - some really old computers utilizing old Intel Integrated graphics (such as GMA) may not cut it for osu!.
- Your drivers may not be up-to-date. One of the easiest ways of getting somewhat better performance is bringing your drivers up-to-date, especially your graphics drivers.
- Try turning off some visual settings from the options menu. If your problem is not fixed by any of these, try the advanced troubleshooting methods below:
This might simply be caused by using a system with very outdated hardware. Aside from getting a more powerful system and checking the other sections in this article there is not much you can do in this case.
Occasional momentary freezeups.
Check if another background process is monopolizing your system for brief moments. This could be caused by other games, web browsers, or server apps (including file sharing/torrents). Close all other background programs and tray icons and see if the problem persists.
FPS drops sharply after an update.
This is known to happen to some users after some updates. Restart your PC to fix it in 99% of cases.