Rekordbox Latency - Please Help!!

Please help...

I recently purchased a new Lenovo laptop, spec:

• Windows 10 S
• Intel® Core™ i7-1065G7 Processor
• RAM: 8 GB / Storage: 512 GB SS

More than enough computing power to run Rekordbox in performance mode as far as I am aware. 

I am using it with a DJM750mk2 and 2 x CDJ2000s.

I cannot seem to run Rekordbox Performance mode without pops and crackles - latency issues I believe?

Already tried:

- Updating firmware on mixer and CDJs and checking latest version of Rekordbox downloaded

- Turning off the processor boost mode and checking Rekordbox is not one of the apps selected for power saving.

- A trick I found somewhere on this forum for Windows 10 latency, where some random settings needed to be 00 00 00 (along those lines). 

None of it has made any difference so far. I previously used a MacBook for Rekordbox Performance Mode, with the same mixer and CDJs, so I believe the issue lies with the laptop rather than the Pioneer hardware.

Can anybody suggest anything more to try please?! I do not believe that this laptop is not powerful to run rekordbox... 

Thanks in advance!

Sam