try Download center
and also set your ecm pid's by pressing mute>exit>blue button
when on $ channel this is on default if you are using only astra 28.2 there will be only one scroll to this and press ok and yes to save move to a different channel and back if you use motorised then some providers might have more ecm pid's and you will have to try wich one works best for you with your server and you would have to do this for every $ channel.
it sounds like a lot of work and it is so start with the channel that glitch or freezes the most and see if it makes a difference
and when your finished make sure to back up your channellist
also take in account that when you are recording a $ channel and then watch an other $ channel on different transponder that you will get more glitching and freezing depending on the server you connect to cause you will be overloading you c-line
if all this doesn't work then the server is more then likely overloaded and it would be time to get a better share
You mostly get what you pay for.
The cheaper they are the crappier they are.