@MyVR600 Unfortunatelly VR600 doesn't support VPN Client feature - chefck this blog.

@jarda-archer-c5 Here's a guide for Media Server feature on the TP-Link wireless routers. Keep in mind that your Archer C5 v4 is with a customized FW for ISPs and it's not supported by the community.

@Hasan-Hussein You should be able to do that the same way as if you are updating the router FW, but using an older FW release - Archer C50(EU)_V3_170822. Keep in mind that if you do that, you would...

@mouuro Don't worry about that - check this post. This already has been tested on AX55 v1. You can start with that first. If the issue persists, I would recommend to make a configuration backup...

@mouuro Have you tried to reset the router to its factory defaults, re-configure from scratch and test if there's any difference. You can also try the latest stable FW release v1.3.1 from this link...

@sohouser If you want to change your ISP DNS try here: Advanced=>Network=>Internet: