Incompatibility with GTX 1650 ti in premiere element

"but quickly the UHD graphic take over and the result is very bad"

If results are visually bad, there is something else going on.   The GTX 1650 may make the process go faster, but the quality will be the same.  If quality is bad there is some combination of footage specifcations, project settings and output settings that have gone wrong.  

Can you describe your workflow?

This is the card list https://helpx.adobe.com/premiere-elements/using/gpu-acceleration.html

Do not count on Windows to be fully up to date when it comes to device drivers
Go to the vendor site to be sure you have an updated driver for your graphic adapter
nVidia Driver Downloads http://www.nvidia.com/Download/index.aspx?lang=en-us
-for Premiere Pro and MAYBE Premiere Elements use the STUDIO driver, not the GAMING driver
-such as (this MAY not be the latest) https://www.nvidia.in/Download/driverResults.aspx/177929/en-in
If you have a laptop you MAY also need to check for a laptop specific nVidia driver

There are also intermittent reports that the newest driver is not always the best driver due to driver bugs or compatibility issues, so you MAY need to try an earlier driver version