delay in the change of weapon

[Alexmaxx-KT]

hello guys, I wanted to make this little post, since I consider that the change of weapon shift + Z has a delaty around 1 or 2 seconds, I thought it was my internet or connection to the server but normally the ping is stable at 80-90 and I use gunner really is very uncomfortable and annoying to have this delay in exchange for pistols to cannon

then sorry for me weak englsh