Menus / Custom games window etc blank. Hanging game

Since the update entering the game has been a disaster. Logging out of bnet has no effect. Occasionally starts working again after a PC reset but hit and miss, and even once menus/custom games do actually show up there’s the issue with not being able to join lobbys and/or instant disconnecting if you manage to load into the lobby.
edit. Have performed 2 complete uninstallations of wc3 and bnet app to no affect

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