High Latency and Packet loss

The latency is rather high so that doesn't help and probably contributes to the packet loss. In effect you would have poor performance and retransmission of packets. Check your cellular metrics for both the 4G and 5G signals and identify the frequencies. If the 5G is n41 and the tower is not too far away it is good to know and understand the metric values. If your RSRP is good be sure to try to improve the RSRQ and SINR values. If you are able to reposition the gateway to improve the radio signal receive quality and the signal to noise ratio then the result should be improved performance as there should be less packet damage and fewer retransmissions. Sure if you can get improved signal receive power that also will help but try to improve the quality of the signal and don't overlook that. Your location may not have the best signal from the tower so that can be a challenge.