Wireguard (Mullvad) - Errors Out, speed drops

[birry_85]

Hi All,

I've had a pretty solid configuration for a while now but recently I've started to have massive slowdowns (90% speed drop) on my wireguard interface when downloading anything substantial, The "Errors Out" counter seems to suddenly be climbing as well, which I've not noticed in the past.
For example, running a speedtest.net test from a client who's traffic goes via the wireguard interface will add approx 6000 to the counter.

I get the same behaviour if I change the config to use a different wireguard endpoint as well... so im inclined to think the issue is on my side rather than Mullvad.
I dont get any errors out on my WAN interface if I change my firewall rules for the same client to go out via the WAN and run the same speed test.

Not sure where to start looking for errors! Any help would be appreciated Thanks!