Just an FYI for everyone; there's an extremely dangerous security flaw that has just been revealed in the last few days. It allows attackers to read contents from protected memory, and it affects all Intel CPUs made in the last 23 years, and partially affects AMD and ARM processors.
In layman's terms, it would let even a webpage read passwords, encryption keys, and other secure content from your computer without you knowing.
The fix for this is going to be in an update from Microsoft on Tuesday. Macs may already have an update, and Linux I know already has the patch in the mainline kernel, so keep an eye for any updates, and install them ASAP.
This fix does incur a not insignificant performane penalty on computers, ranging from 5% to 50% depending on the exact task and CPU. Your computer *will* be slowed down though regardless by this fix, but please install it anyways. This is a dangerous security flaw, with known working exploits.
https://www.forbes.com/sites/thomasbrewster/2018/01/03/intel-meltdown-spectre-vulnerabilities-leave-millions-open-to-cyber-attack/#e6b957739328