Rekordbox V6.0.4 DVS Setup + XDJ-RX + Technics 1210 Mk7's + Control Vinyls

Hi,

I am at a loss, I have tried to find the solution to set DVS up for Rekordbox v6.0.4 but I am no wiser after reading manuals, viewing empty Pioneer UK Forums on Rekordbox and viewing so many Youtube videos that all look to be heading the right direction but the settings they are looking at are just not available for me, so I beg for some support here before the kit goes out the window!

Hardware setup:

1 x XDJ-RX (Firmware v2.21)
2 x 1210 MK7's
2 x Rekordbox Control Vinyls 
1 x PC, connected via USB

XDJ-RX connected via USB to PC directly, Turntables connected via Phono (RCA) cables with grounds all connected and work just fine as turntables.

XDJ-RX on the back connections panel is set to phono for each channel, on the top, the toggle button for deck or phono/line is also set to phono for each channel.

Control Vinyls placed on each deck with side A up and needle lowered onto the vinyl, tables not turning at this point.

Rekordbox Setup & Seetings:
Rekordbox: v6.0.4
XDJ-RX Setting Utility Driver: 1.300

• Set to "Performance" mode
• Preferences > DVS > Enable DVS Function = Checked. (1 px sized green dot in middle of all 4 decks.)
• Preferences > Audio > Audio = XDJ-RX ASIO
• Preferences > Audio > Sample Rate = 44100Hz (48000Hz not available)
• Preferences > Audio > Mixer Mode = Internal (External not available)
• Preferences > Audio > Input Channels > Input Record = MASTER OUT (Greyed out)
• Preferences > Audio > Input Channels > Input Deck 1 = - (Hyphen / Dash symbol)
• Preferences > Audio > Input Channels > Input Deck 2 = - (Hyphen / Dash symbol)

• Preferences > Audio > Input Channels > Input Deck 3 = - (Hyphen / Dash symbol)
• Preferences > Audio > Input Channels > Input Deck 4 = - (Hyphen / Dash symbol)
•  

All of the dropdowns for the Input Deck 1,2,3 & 4 all only show a single tick/check icon and when I try to select this, it does nothing also.

While attempting to find a solution to this issue I referred to the following Rekordbox V6 User Guide PDF: https://cdn.rekordbox.com/files/20200323144552/rekordbox6.0.0_manual_EN.pdf

The section on DVS in Performance mode on page 201 advises following the instructions in the “rekordbox dvs setup guide”. I could not find this anywhere online, in the forums or the Pioneer support areas?

I then followed the support links here for the UK: https://www.pioneerdj.com/en/support/contact/united-kingdom/

Using the links from above linked page I checked the UK Rekordbox Support area for Rekordbox, its blank, empty, yes nothing at all???? https://support.pioneerdj.com/hc/en-us/categories/360002176332-rekordbox

Lastly, I have previously installed the XDJ-RX_1.300.exe driver and had the drivers installed successfully notification at the end of the process (cannot recall the exact wording) but each time I connect my XDJ-RX the driver install window appears every time. (I did install this with Firewall's, VPN's etc. all disabled in order to achieve the successful install originally)

When I try to reinstall the XDJ-RX_1.300.exe driver I just continually get a failed notice with error code 0.10 if that means anything to anyone.

The install window also refers to the driver not being the latest version, but I cannot find a newer version either?

See the below images for more info:

I suspect the issue is linked to the really buggy software and drivers that we all know as Rekordbox, but I will be damned if I can work out how to resolve this. 

See the below images of my current active plan & preferences mentioned above.

Any pointers or support appreciated as Rekordbox has seriously gone downhill the last 3-4 years or so and seriously considering selling up and jumping ship at this point.

So far in all the years I have owned my XDJ-RX, I have spent more time trying to get it to work over actually using the kit!