@ZingalalaTej You can do the following quick test: From the picture you posted, I see that you are using Archer C6/A6 to connect to the Syrotech modem. You can set A10 in AP mode - (Case 1) and...

@Miberecz There's a difference between AP mode and Router mode. Several services are not availbale, which might be the reason for this feature to be lacking in AP mode. Obviously the manual AP mode...

@ProtheusSV Here's a guide on how to configure QoS in your device (Case 2). Here's a good video example in more details (not in English unfortunately, but pretty much self explanatory).

@ZingalalaTej Use a good quality, factory made CAT 5E/6 cable. If that doesn't work change this setting and test again:

@Ankit_009 Did you have these disconnect before installing the repeater ? What's the repeater make and model ? You can try to re-arrange the IP address space to see if that will improve things. For...

@Juhana It's preferable to keep time setting to auto. Otherwise it's quite possible that you have to set the time on every reboot or power outage. Changing DNS might help in such cases. As for the...