is it normal to have slight jittering when X,Y axis are combined in use

[jondo]

hello guys
i'm very new to the hotas and flightstick in general
this is my first time using flightstick
i just bought vkb gladiator mk2 OEM version of stick (ravcore javelin,speedlink airrow,cobra v6)
and i have no idea that is it normal for the stick to jitter slightly when both of X,Y axis are in use simultaneously
it doens't occur whenever i pull the stick in 90 degree staright tho
here's a testing video sample
you might get a better idea of what i'm trying to say
is it normal to have such jitter?
it's not a big problem although it still bothers me a bit
any help or opinion would be much appreciated

https://youtu.be/HsbhOl9_gKs

[Victorus]

Is your device native VKB joystick? Does VKB configuration tool recognize it?
About jitter - may be it is hand tremor? Can you fix stick in any intermediate position?

[Ron61]

This is not our joystick - it's a clone, sorry.