Mouse shooting / aiming problems - anyone else?

I don't know if i'm the only one having this problem and i'm searching for people who may have the same problem that i do so i know for a fact it's not a setup problem.

Sometimes in game when i aim and shoot or just shoot without aiming, for no reason my weapon stops shooting for a short periode of time (and no not burst mode, auto mode)... It's really annoying because i can sometimes miss the kills or get killed myself because it stops shooting... It happens only sometimes, like once or twice a game, but it's getting really annoying and it's game changing for me... In a bad way...  

This is my mouse: Steelseries sensai RAW gaming mouse Steelseries Sensei RAW Gaming Mous 

I don't know why this happens, i have 0 problems in other games or daily use of my mouse, so i don't think it's mouse related, i also switch the shooting & aiming buttons, but i keep getting the same problems even with different mouse buttons on them. I tried it on cs go and i never had any aim & shooting or just shooting problems, so i'm pretty sure it's game related. 

Anyone else having this problem (can even call it a bug? )? Anyone know what to do? 

I tried updating my mouse drivers but didn't seem to fix anything for the game, tried different graphics etc... i don't want to buy a new mouse just for apex, because i have 0 issue on all other games i play...

Thanks in advance for tips & comments!