A new RPi 4" "WaveShare" 480x320 screen arrived today. This is destined for a RPi project but I have connected it the the ESP8266 NodeMCU board and the TFT_eSPI library runs fine with it.
In case anyone is interested in using this larger screen then here is a link to the eBay page. Note the postal charge! There are other advertisers that sell these displays at a slightly lower cost.
As is often the case with displays from China the images in the advert do not correspond exactly with the delivered screen but it works fine, it does have the WaveShare logo and is marked "4 inch RPi LCD (A)".
Due to the very restrictive PCB track and PCB pad access it would be much trickier to add the speed enhancing mod detailed in post #99 , but the drawing performance is still very good even with no modifications.