Thank you for your enquiry. First let me ask what OS are you running with your Pavilion system.
Also have your check with HP for any issues regarding with the system.
Also the lower frame rate could be caused by different options. Example, antivirus, HDD performance or any monitoring software that can cause the usage of memory or HDD access.
But for Roll back could be gray out by any of the HP Utilities or the lost of the previous driver libraries that can be erase by disk cleaner or HDD space safe.
You can check the HP web site http://support.hp.com/us-en/product/HP-Pavilion-dv7-Entertainment-Notebook-PC-series/5145684/model/5193752/drivers/
for previous drivers.
Or you can check the Intel website https://downloadcenter.intel.com/product/81500/Intel-HD-Graphics-3000-for-2nd-Generation-Intel-Core-Processors