Can Anti-virus affect device performance?
All antivirus applications on all platforms will impact the performance of the device.
This is because they intercept your actions and check them for unwanted effects.

You say you have installed anti-viruses - plural.  If you install more than one such application on any device they will start to check upon each other.  This will have a significant cumulative affect which will be immediately noticeable.
If you have installed more than one, then uninstall in the reverse order of installation.