Games run slower all of a sudden

[TkSilver]

While it is possible for computer hardware to slowdown over time due to physical reasons (mainly head because your cooling is clogged with dust being the most common), this tends to not be something that "suddenly" happens. Hard drive failure can be "sudden" (well there is usually warning or it got dropped), but that would usually effect more then just a single program.

Software changes are often the cause of sudden performance loss so...
1. Did you update anything between it working fast and when it slowed down?
2. Did you install anything ""?
3. Did you visit any shady sites ""? If you did when is the last time you ran a good virus scan? (I recommend MalwareBytes for manual scanning)