Hi Sam!
Thanks for your reply, and apologies it's taken me some time to respond. As it happens, it seemed to improve in terms of disconnections (they stopped). However I then started noticing that my YT videos kept switching to low quality and then back to 1080p.
I already looked at that log and saw no issues myself other than the usual ToD type ones at the time so reset it. Below is a C+P of it now.
As for speed, I've never achieved 200mbps I don't think, but have always been pretty consistent at over 180mbps. Unfortunately, I have been speed testing again tonight and it really is very variable! This is on a hardwired LAN and WLAN. I am getting a max of around 23mbps, but on some tests as low as 2mbps. I've just also completed a download from WeTransfer, and got a measily 1mb/s. Something else that's now been happening the last few days is WLAN devices see random disconnections from the router for about 5 seconds and then come back.
==LOG BELOW==
29/10/2017 23:01:14 GMT 29/10/2017 23:01:14 GMT Error (4) 68010100 DHCP RENEW sent - No response for IPv4
29/10/2017 23:01:14 GMT 29/10/2017 23:01:14 GMT Error (4) 68010100 DHCP RENEW sent - No response for IPv4
29/10/2017 23:01:14 GMT 29/10/2017 23:01:14 GMT Error (4) 68010100 DHCP RENEW sent - No response for IPv4
29/10/2017 23:01:14 GMT 29/10/2017 23:01:14 GMT Error (4) 68010100 DHCP RENEW sent - No response for IPv4
29/10/2017 23:01:14 GMT 29/10/2017 23:01:14 GMT Error (4) 68010100 DHCP RENEW sent - No response for IPv4
29/10/2017 23:01:14 GMT 29/10/2017 23:01:14 GMT Error (4) 68010100 DHCP RENEW sent - No response for IPv4
29/10/2017 23:01:14 GMT 29/10/2017 23:01:14 GMT Error (4) 68010100 DHCP RENEW sent - No response for IPv4
29/10/2017 23:01:14 GMT 29/10/2017 23:01:14 GMT Error (4) 68010100 DHCP RENEW sent - No response for IPv4
29/10/2017 23:01:14 GMT 29/10/2017 23:01:14 GMT Error (4) 68010100 DHCP RENEW sent - No response for IPv4
29/10/2017 23:01:14 GMT 29/10/2017 23:01:14 GMT Error (4) 68010100 DHCP RENEW sent - No response for IPv4
29/10/2017 23:01:14 GMT 29/10/2017 23:01:14 GMT Error (4) 68010100 DHCP RENEW sent - No response for IPv4
29/10/2017 23:01:14 GMT 29/10/2017 23:01:14 GMT Error (4) 68010100 DHCP RENEW sent - No response for IPv4
29/10/2017 23:01:14 GMT 29/10/2017 23:01:14 GMT Error (4) 68010100 DHCP RENEW sent - No response for IPv4
29/10/2017 23:01:14 GMT 29/10/2017 23:01:14 GMT Error (4) 68010100 DHCP RENEW sent - No response for IPv4
29/10/2017 23:01:14 GMT 29/10/2017 23:01:14 GMT Error (4) 68010100 DHCP RENEW sent - No response for IPv4
29/10/2017 23:01:14 GMT 29/10/2017 23:01:14 GMT Error (4) 68010100 DHCP RENEW sent - No response for IPv4
29/10/2017 23:01:14 GMT 29/10/2017 23:01:14 GMT Error (4) 68010100 DHCP RENEW sent - No response for IPv4
29/10/2017 23:01:14 GMT 29/10/2017 23:01:14 GMT Error (4) 68010100 DHCP RENEW sent - No response for IPv4
29/10/2017 23:01:14 GMT 29/10/2017 23:01:14 GMT Error (4) 68010100 DHCP RENEW sent - No response for IPv4
29/10/2017 23:01:14 GMT 29/10/2017 23:01:14 GMT Error (4) 68010100 DHCP RENEW sent - No response for IPv4
29/10/2017 23:01:14 GMT 29/10/2017 23:01:14 GMT Error (4) 68010100 DHCP RENEW sent - No response for IPv4
29/10/2017 23:01:14 GMT 29/10/2017 23:01:14 GMT Error (4) 68010100 DHCP RENEW sent - No response for IPv4
29/10/2017 23:01:14 GMT 29/10/2017 23:01:14 GMT Error (4) 68010100 DHCP RENEW sent - No response for IPv4
29/10/2017 23:01:14 GMT 29/10/2017 23:01:14 GMT Error (4) 68010100 DHCP RENEW sent - No response for IPv4
29/10/2017 23:01:14 GMT 29/10/2017 23:01:14 GMT Error (4) 68010100 DHCP RENEW sent - No response for IPv4
29/10/2017 23:01:14 GMT 29/10/2017 23:01:14 GMT Error (4) 68010100 DHCP RENEW sent - No response for IPv4
29/10/2017 23:01:14 GMT 29/10/2017 23:01:14 GMT Error (4) 68010100 DHCP RENEW sent - No response for IPv4
29/10/2017 23:01:14 GMT 29/10/2017 23:01:14 GMT Error (4) 68010100 DHCP RENEW sent - No response for IPv4
29/10/2017 23:01:14 GMT 29/10/2017 23:01:14 GMT Error (4) 68010100 DHCP RENEW sent - No response for IPv4
29/10/2017 23:01:14 GMT 29/10/2017 23:01:14 GMT Error (4) 68010100 DHCP RENEW sent - No response for IPv4
29/10/2017 23:01:14 GMT 29/10/2017 23:01:14 GMT Error (4) 68010100 DHCP RENEW sent - No response for IPv4