Help with my setup, Receiver has 2 x HDMI2.2 output. Looking for 4k to 1080 scaler with RCA

I've had a look through the forums but i cant see anyone with my setup.

I'm new to 4k, previously my setup was working fine as i was only running 1080p.
My Pioneer receiver has 2 x 4k HDMI2.2 outputs, so this was fine connecting one output to the tv and one output to the HDMI to AV converter.(https://www.ebay.ie/itm/HDMI-t…MsAAOSw5lJazUA9:rk:1:pf:0)

Now with my new 4k tv, i seems the Pioneer receiver see's the HDMI to Av unit as a 1080p device. So both outputs go to 1080p as it looks like the receiver doesn't have a separate downscaler per channel. So no 4k on my new TV, unless i disable the HDMI output going to the HDMI to AV device.

I don't think i need a hdmi splitter as my receiver has the hdmi outputs, so just a cheap scaler to convert 4k 60hertz to 1080p, or even better straight to rca. Rather use less items in the setup if possible.

Anyone have any idea's?

Thank you.

I wonder wouldn't something like this work?

[WIKI]https://www.aliexpress.com/ite…df-40f8-b3dd-fd0648bf7fc5[/WIKI]

I know it's only HDMI1.4 but my receiver my output 4 and different frequency. 30 and 60hrtz.