It is always recommended that laptops use Manufacturers versions of the drivers, as they are often very customized. The AMD drivers, are Vanilla and would lack any custom changes.
When you installed the drivers there are some guide lines that help with getting it right (your manufacturer may have additional instructions). It can be very important to do everything as recommended. See this guide: Laptop graphics update...How to
Worth noting too, you will want to make sure all the other drivers are current, bios/firmware for system are the latest and all OS updates are installed. Doing this really increases the odds of success.
If you continue to have issue, you may certainly ask here still, but your manufacturer is the expert on that machine. You can certainly ask question to them or any forums they might have too. It is almost always faster to get answers from people with the exact same hardware.
If your manufacturer isn't updating the drivers as AMD releases the reference drivers, then you should let HP know that isn't satisfactory. They need to support the product well after the sale. This seems to be a sad trend these days with many computer makers.
I've seen this mouse issue talked about on here before, you might search. It might have some good advice. I can't dig too deep right now.
