The next blockbuster update coming to Windows 11 could seriously slow the performance of your SSD storage. It’s all thanks to a decision by Microsoft to encrypt all personal files by default with the introduction of its next free upgrade, known as 24H2 — the second of two major updates coming to Windows 11 this year. Until now, Microsoft has only offered BitLocker encryption to PC owners with Windows 11 Pro, but the next update lowers the eligibility criteria to make it available to more people. In theory, that’s a positive change. Encryption scrambles the files stored on your PC, making it mu…