Check cfg file, save it and reinstall ET. Try Legacy ET, much better and designed for more modern graphics plus they have extra options with a built in clean out unwanted mods option plus extras on that too.
Also of note, I think the issue was at the server end. Spikes were bad after ET server was reset (map records are what they were a few years ago I believe) but as of late, last few weeks it has been pretty stable.
And it still is weird. During the day ping is perfect and I can play at 50 ping. Try later at night when the local Telstra server gets oversaturated, back to 300 ping and not worth trying. Guess it proves my initial thought that it was not the computer. Anyway - back able to play - be friggin gentle though will yas?????
And after having such a good run the issue is back. It has to be Telstra and the work they are putting in to get NBN out here in the next 12 months. I am getting 1fps on OZ but perfect on dBd. This sucks.