Yeah,there are some 35 lvl 2h rus scale danish gs spammers out there that are very hard to kill and they spam and have good footwork so your best bet is to raise shield and withraw from fight if you feel you are slower and don't have chance.
Only attack them when you are in grop or have teammates arround.
It is a bit my old friendgish,but that is why you have shield. 2h,pole builds are much superior to your shield build,so play as support.
Also avoid playing in siedge.
What is your build and main weapon?