Random crashes

[Marmillian]

Hello, need some suggestions please, but note that im basically computer illiterate.
Only thing i have is a microsoft surface pro 7 to play. I am able to get into the game and play fine, but only for about 1.5 to 2 hours before i get client crashes while running around in the game. I dont have problems zoning or logging in, just random disconnects. I have tried different things ive found, like running as administrator, voodoo2, using windows xp packs 2 and 3, and now ive tried zaelas middlemand program. I cant play in windowed mode because the UI becomes way too small, so i play in fullscreen with matched resolution to the surface pro. None of these fixes seem to stop the crashes, and it gets frustrating because it usually involves character deaths. Any help would be appreciated, thank you.