Can hardware hold me back?


I am wondering if poor hardware, or even an poor internet connection can hold me back when racing?

Im thinking something like bad internet or hardware could impact how Zwift renders other riders compared to me or something?

Im asking because i sometimes see that i struggle to maintain my position in a peloton, especially if its a big one. Sometimes i also seem to run into another rider, like my avatar is trying to ride through another rider at an angle instead of just passing him/her.
This issue is on both flats and climbs, and occurs even if im putting out more power than the other person, both in w/kg or in absolute power.

Could this be hardware related?

Im using a 2010 MacBook Pro
Intel Core 2 duo, 2.4 Ghz
NVIDIA GeForce 320M 256 MB GPU
8gb RAM
100/50 mbit WiFi