Xmage Java Settings - Laggy Multiplayer from China

Hi Guys,
What are the best settings to ues for Xmage on a laptop running with 4GB of memory (not a lot of memory I know).
I connect from Shenzhen in China and sometimes the .de server is quite laggy other times it's really fast. Chinese internet is a bit strange with regards to some websites / download speeds. I can play MTG Arena and MTGO fine when doing multiplayer here in China so just wondered what sort of settings I need for Xmage. I see the launcher has a java settings for both client and server but am unsure if these need to be changed? (I've read a few posts saying to adjust it for a better experience).
Any ideas be much appreciated.
Rick
What are the best settings to ues for Xmage on a laptop running with 4GB of memory (not a lot of memory I know).
I connect from Shenzhen in China and sometimes the .de server is quite laggy other times it's really fast. Chinese internet is a bit strange with regards to some websites / download speeds. I can play MTG Arena and MTGO fine when doing multiplayer here in China so just wondered what sort of settings I need for Xmage. I see the launcher has a java settings for both client and server but am unsure if these need to be changed? (I've read a few posts saying to adjust it for a better experience).
Any ideas be much appreciated.
Rick