Using an Office activator can potentially impact your system’s performance negatively. Many activators modify system files or registry settings, which can lead to software conflicts, instability, or crashes. These modifications might also affect other applications or system processes, causing overall performance issues. Additionally, since activators often come with malicious software, your computer might experience slowdowns, unexpected behavior, or frequent security alerts. For optimal performance and stability, it’s advisable to use genuine software and avoid activators.