Question Amd Radeon Super Resolution (RSR) and hertz ?

[bep1995]

Hello !! Yesterday I ordered a new Asus VP229HE monitor to replace my old 19-inch LG L194WT. My question is about Amd RSR. To use RSR I must drop the resolution but I don't know what resolution I must use to be able to to enable 75hz which must be 16:9 obviously. I want to use a custom one from amd settings (1477x832) which is equal to fsr ultra quality. Can I use this with 75hz or I will stuck to 60hz when use rsr ?? Currently I have the rx 550 so I can't test it but I will upgrade next month to an rx 6600/rx 6600xt. Here's a picture from the monitor manual about supported resolutions.
https://ibb.co/6PrQQRZ

 

[kerberos_20]

about 1366x768 is step below 1080p for 16:9
and yes you can use custom 16:9 resolutions with same refresh rate as native

 

[bep1995]

Today i received the monitor and yes it works at 75hz with 1477x831 (fsr ultra quality). I cant right now test rst but in windows and games it works, so im happy with it !! very beautiful monitor !!