guild wars freezing and juttering

i have been getting these weird lag spikes recently but its nothing to do with my frame rate. my character takes a while to react to things for example skills actually take effect about 5 secs after i clicked them and sometimes when im running i just randomly slow down and stop not being able to move anywhere but the weird thing is is that i can look around fine, access the ui fine and press skills but can't actually activate stuff. it was fine the last time i played but now its gone weird. it gets extremely annoying when your just standing around in an explorable area just stuck there and then suddenly your getting attacked by a boss and a huge swarm of guys. is it to do with my internet? please help thank you

This is called lagg

Check your internet for slow connection. Could be on the GW-servers as well. How often does it occur?