I experience the same problem which is described in the next topics:
https://forums.nomachine.com/topic/remote-mouse-laggy-in-client
https://forums.nomachine.com/topic/very-high-mouse-input-lag
https://forums.nomachine.com/topic/cursor-lag-when-moving-windows
https://forums.nomachine.com/topic/sluggish-cursor-motion
Of course I followed the recommendations mentioned in the topics above but, unfortunately, with no success. Also I see significant higher picture latency in comparison with standard RDP clients. Please help.
My configuration:
Processor: Intel(R) Xeon(R) CPU E3-1275 v6,
video Intel HD Graphics P630 (driver ver. 24.20.100.6290),
Windows Server 2019, no monitor, 1Gb Eth.
I tried to connect from different Windows hosts and the result is the same.