At last!
Gawd how hard can network-fixing be.
I had a pack of tiny problems which eventually created a big problem - my latency went up to 600 for no reason, dl and ul were aprox 60% lower than they should be, random people could access my network and i pissed me off.
Today I fixed it thou - Couldn`t access my routers setting cause my ip was made by my computer and wasn`t starting with 192.168.
Solved that part by going to other computer and accessing to the setting from there.
Next thing was that DHCP was off, I tried to find some guides but find none which would work for me.
Solved that by going to routers settings and setting it on - after that I had massive connection problems and my pc said that there was 160 cables connected to my router somewhy.
Solved the new connection problems by rebooting the modem and executing some fixing programs and using tcp-optimizer ( no idea how it finally got fixed)
Then there was even more problems, weird pc`s were connected to my home-network, I removed the antenna from the router cause i thoguht they were using my wlan but they weren`t.
I tried to find some guides again with no success so I decided to find out by myself how can i kick them from my network
Solved that by going again to the setting of the router and blocking their MAC adresses - after that, the 160 cables connected happened again along with message that my ports are overloaded.
So I used that fixing method for the 160 cables like before and still pc spammed tens of ports overloaded -messages.
Solved the messages by releasing and renewing my ip (idk why i thought that would work but it did).
Next thing was that my modem could not connect to internet anymore, I spent hours thinking how to fix it since no guides were found...again.
Finally solved that by flushing dns.
After all those things, I had to do some minor fixes and set-ups and now my connection is perfect, latency 28 and wlan secured!!!
Send in your thoughts, lol :]