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

[johndo]

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