This message was posted on behalf of Intel Corporation
I understand that you are having performance issues after updating the BIOS of your system.
We appreciate that you are taking time to contact Intel about your concerns. We understand that the security and performance of your devices are important to you. Performance impacts are workload-dependent, and, for the average computer user, should not be significant.
This means that the typical home and business PC user should not see significant slowdowns in common tasks such as reading email, writing a document, or accessing digital photos. For Intel’s latest performance testing results, see https://newsroom.intel.com/editorials/intel-security-issue-update-initial-performance-data-results-client-systems/
Since the problem began after the BIOS update it is highly recommendable to get in contact with Dell and mention the performance aspect.
I apologize for any inconvenience this may cause.