Targetting issues

Dunno if this is the right place for post this, if no thatn sorry.

Ive coma across a big targetting issue (pc). Ive wanted to set up my targetting options but they simply des not work.

i went to System->control settings->targetting -> click filter settings. switched options on and off. mouse click works the same every time i use it.

next i went to System->control settings->filters (enabled and disabled target cycling). switched the options - tab key worked every time the same (tried with weapon in and out).

Any idea why this is not working? For example once i was mining and one person stood on my mining node. i could not point at that node. it was impossible to do it manually and tab was nt workind despite switching opions. so if there are some players using portals / other similar stuff is impossible for me. How can i make it work properly?

Thank you in advance.